Service Information: Textron Lycoming

Alternative Names: (Avco Lycoming, Lycoming Engines)

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Illustrated Parts Catalogs • Installation & Operation Manuals • Maintenance Manuals • Miscellaneous • Operator's Manuals • Overhaul Manuals • Publication Indexes • Service Bulletins • Service Instructions • Service Letters • Special Advisories • User Manuals

Illustrated Parts Catalogs
Name	Revision	Lang	Subject	Date
IPC 102-1	B	en	O-290-D Series	04/30/1991
IPC 103		en	O-320, IO-320 and LIO-320 Series	01/31/1976
IPC 106		en	0, 10, HO, H10-360
IPC 107		en	VO-360 Series and IVO-360-A1A Helicopter
IPC 110		en	VO-435 and TVO-435 Series	09/30/1972
IPC 111		en	GO-480-B, -D and F6 Series
IPC 114	2	en	GSO-480 and IGSO-480 Series	09/30/1980
IPC 115-1	A	en	O-540-A Series Standard Cylinder Flange Crankcase	09/30/1991
IPC 115-2		en	O-540-B, -E & -G Series	07/31/2009
IPC 118		en	VO-54D-Series and TIVO-54D-A2A Helicopter	10/31/1973
IPC 119		en	IO-720-D1C Wide Cylinder Flange	10/31/1977
IPC 119	1	en	IO-720-D1C Wide Cylinder Flange
IPC 120	1	en	TIO-541 Series	12/31/1981
IPC 121		en	TIGO-541 Series	10/31/1975
IPC 122-H		en	O-320-H 76 Series	12/31/2012
IPC 123		en	76 Series & O-360, LO-360 Series
IPC 124	1	en	TO, LTO-360 76 Series	04/30/1985
IPC 203-1		en	O-320-A2B, -A3B Series	07/31/2011
IPC 203-2		en	O-320-A2C, -A2D Series	08/31/2011
IPC 203-3		en	O-320-E1A, -E2A Series	10/31/2011
IPC 203-5		en	O-320-E2B, -E2C Series	11/30/2011
IPC 203-6		en	O-320-E2D, -E3D Series	09/30/2011
IPC 203-7		en	O-320-E2G Series	11/30/2011
IPC 203-8		en	O-320-E2H, -E3H Series	11/30/2011
IPC 203-9	A	en	O-320-B and D Series High Compression, Wide Cylinder Flange	11/30/1985
IPC 203-D3G		en	O-320-D3G Series	07/31/2012
IPC 215-1	A	en	IO-540-A, B, C, D, E and G Series Standard Cylinder Flange Crankcase	07/31/2010
IPC 215-2		en	IO-540-J, K, M, N, P and R Series Standard Cylinder Flange Crankcase	05/31/1993
IPC 302	B	en	O-235 Series	12/31/1986
IPC 302-1		en	O-235-P2A
IPC 302-L2A, -L2C		en	O-235-L2A, -L2C Series	11/30/2012
IPC 306-1	B	en	O-360-A Wide Cylinder Flange	06/30/1980
IPC 306-1	B reprint	en	O-360-A Wide Cylinder Flange	08/01/1991
IPC 306-2	B	en	O, LO, TO, -360 Series Wide Cylinder Flange	05/31/2010
IPC 306-3		en	O-360-A4N Series	04/30/2011
IPC 306-4		en	O-360-C1G Series	03/31/2011
IPC 306-5		en	(L)O-360-A1H6 Series	05/31/2011
IPC 306-6		en	O-360-A1P Series	05/31/2011
IPC 306-7		en	O-360-B2C Series	07/31/2011
IPC 306-8		en	O-360-C4F and -C4P Wide Cylinder Flange Crankcase
IPC 306-9		en	O-360-A4P Wide Cylinder Flange Crankcase
IPC 306-10		en	HO-360-C1A Wide Cylinder Flange Crankcase
IPC 306-11	A	en	O-360-J2A Wide Cylinder Flange Crankcase	08/31/1998
IPC 306-13		en	IO-360-B1G6 Wide Cylinder Flange Crankcase
IPC 306-16		en	IO360M1B Series	12/31/2010
IPC 306-17		en	IVO-360-A1A Series Wide Cylinder Flange Crankcase	07/31/2010
IPC 306-A4M		en	O-360-A4M Series	10/31/2012
IPC 315-1	B	en	TIO/LTIO-540-U2A Series Wide Cylinder Flange	12/31/2008
IPC 315-2	A	en	TIO/LTIO-540-V2AD Wide Cylinder Flange	06/30/1986
IPC 315-3		en	TIO-540-AB1AD Wide Cylinder Flange	04/30/1985
IPC 315-4	2nd Ed	en	TIO-540-AA1AD Wide Cylinder Flange Crankcase	12/31/2010
IPC 315-5	E	en	TIO-LTIO-540 Series Wide Cylinder Flange Crankcase	08/31/2010
IPC 315-7	2	en	TIO-540-AE2A	11/30/2013
IPC 315-8	A	en	TIO-540-AF1A, -AF1B Wide Cylinder Flange Crankcase	01/31/1995
IPC 315-9		en	TIO-540 AG1A Wide Cylinder Flange Crankcase
IPC 315-10		en	TIO-540-AH1A Series	05/31/2011
IPC 315-11	A	en	TIO-540 W2A Wide Cylinder Flange Crankcase	12/31/2009
IPC 315-13	A	en	TIO-540 AK1A	11/30/2002
IPC 406-1		en	IO, AIO-360-A, -B Series Wide Cylinder Flange	01/31/1995
IPC 406-2	E	en	IO/LIO-360-C, -J, HIO, TIO, AEIO-360 Series Wide Cylinder Flange	02/28/2009
IPC 406-3	C	en	TIO-360-C1A6D Wide Cylinder Flange	12/31/2009
IPC 406-4		en	AEIO-360-BB -B1F & -B1H	11/30/2005
IPC 406-5		en	AEIO-360-H1B	08/31/2003
IPC 406-6		en	HIO-360-G1A	01/31/2003
IPC 406-L2A		en	IO360L2A Series	03/31/2012
IPC 409-2		en	YIO-390-B Series	10/31/2009
IPC 515-2		en	O-540-F1B5 Wide Cylinder Flange Crankcase	09/30/2009
IPC 515-3		en	O-540-A4D5	01/31/2003
IPC 515-4		en	O-540-H2A5	10/31/2005
IPC 515A4E5		en	O540A4E5 Series	03/31/2012
IPC 615		en	IO-540 Wide Cylinder Flange	12/31/1991
IPC 615-1		en	IO-540-C4D5D Wide Cylinder Flange	06/30/1982
IPC 615-3		en	IO-540-V Series	02/28/2011
IPC 615-4		en	IO-540-W Series Wide Cylinder Flange Crankcase	09/30/1993
IPC 615-7		en	AEIO-540-L1B5D Wide Cylinder Flange
IPC 615-8		en	IO-540-T Series (-T4A5D, -T4B5, T4B5D, T4C5D) Series Wide Cylinder Flange Crankcase	09/30/1992
IPC 615-11		en	AEIO-540-D Series (-D4A5, -D4B5) Wide Cylinder Flange Crankcase	08/31/2001
IPC 615-12		en	IO-540-AC1A5 Wide Series Flange Crankcase	10/31/2008
IPC 615-14	B	en	I0-540-AF1A5	12/31/2009
IPC 615-AE1A5		en	IO-540-AE1A5 Series	07/31/2013
IPC 615-AG1A5		en	IO-540-AG1A5 Series	11/30/2012
IPC 615-K1A5		en	IO-540-K1A5 Series	01/31/2015
IPC 701-1		en	IO-580-B1A	02/28/2003
IPC 800-1	1	en	YTEO-540-B1A	07/11/2014
IPC AEIO-360-B1F		en	AEIO-360-B1F	06/01/2025
IPC AEIO-390-A		en	AEIO-390-A Series	07/31/2016
IPC AEIO-390-A	1	en	AEIO-390-A Series	06/01/2026
IPC IO-360-C1G6		en	IO-360-C1G6	06/30/2016
IPC IO-360-L2A		en	IO-360-L2A	06/01/2025
IPC IO-360-N1A		en	IO-360-N1A	01/31/2016
IPC IO-360-P1A		en	IO-360-P1A	06/30/2017
IPC IO-390-A		en	IO-390-A Series	06/30/2016
IPC IO-390-A	1	en	IO-390-A Series	06/01/2025
IPC IO-390-C		en	IO-390-C Series	02/01/2017
IPC IO-390-C	1	en	IO-390-C Series	06/01/2025
IPC IO-390-D		en	IO-390-D Series	03/31/2020
IPC IO-390-D	1	en	IO-390-D Series	06/01/2025
IPC IO-540-AB1A5		en	IO-540-AB1A5	12/31/2015
IPC IO-540-D4B5		en	IO-540-D4B5 Series	03/31/2015
IPC LIO-360-B1G6		en	LIO-360-B1G6	06/30/2017
IPC LIO-360-M1A		en	(L)IO-360-M1A	01/31/2016
IPC LTO-360-E1A6D		en	(L)TO-360-E1A6D	06/01/2025
IPC O-320-B1A		en	O-320-B1A	04/30/2016
IPC O-320-D2J		en	O-320-D2J	10/21/2016
IPC TEO-540-C1A		en	TEO-540-C1A	12/31/2018
IPC TEO-540-C1A	1	en	TEO-540-C1A	04/30/2019
IPC TEO-540-C1A	2	en	TEO-540-C1A	05/31/2021
IPC TEO-540-C1A	3	en	TEO-540-C1A	07/31/2021
IPC TEO-540-C1A	4	en	TEO-540-C1A	10/31/2021
IPC TEO-540-C1A	5	en	TEO-540-C1A	07/31/2023
IPC TEO-540-C1A	6	en	TEO-540-C1A	12/31/2024
IPC TIO-360-C1A6D		en	TIO-360-C1A6D	06/01/2025
IPC TIO-540-AJ1A		en	TIO-540-AJ1A	04/30/2016
IPC TIO-540-AK1A		en	TIO-540-AK1A	06/01/2025
IPC YO-233-B2A		en	YO-233-B2A	02/29/2016
IPC YTEO-540-B1A		en	YTEO-540-B1A (Lancair)	03/31/2016

Installation & Operation Manuals
Name	Revision	Lang	Subject	Date
IOM 60297-28		en	IO-580-B1A	03/31/2003
IOM 60297-32		en	AEIO-580-B1A	05/31/2007
IOM 60297-33		en	IO-540-AF1A5	01/31/2008
IOM 60297-34	1	en	IO390A Series	05/31/2009
IOM 60297-36		en	(L)IO-360-M1A	06/30/2008
IOM 60297-37		en	YIO-390-B Series	10/31/2009
IOM 60297-40	B	en	YO-233-B2A Series	10/31/2014
IOM 60297-41		en	YTEO-540-B1A Non-Certified Series	09/30/2012
IOM 60297-42		en	AEIO-390-A Series	03/31/2012
IOM 60297-43		en	O-540-A4E5 Series	05/31/2012
IOM 60297-45		en	IO-540-AG1A5 Series	10/31/2012
IOM HIO-390-A1A		en	HIO-390-A1A	09/30/2017
IOM IO-360-N1A		en	IO-360-N1A	01/31/2016
IOM IO-360-P1A		en	IO-360-P1A	01/31/2017
IOM IO-390-C		en	IO-390-C Series	12/31/2016
IOM IO-390-D		en	IO-390-D Series	02/29/2020
IOM LIO-360-B1G6		en	LIO-360-B1G6	08/31/2017
IOM TEO-540-C1A		en	TEO-540-C1A	10/31/2018
IOM TEO-540-C1A	1	en	TEO-540-C1A	03/31/2019
IOM TEO-540-C1A	2	en	TEO-540-C1A	04/30/2021
IOM TEO-540-C1A	3	en	TEO-540-C1A	06/30/2021
IOM TEO-540-C1A	4	en	TEO-540-C1A	10/31/2021
IOM YTEO-540-B1A		en	YTEO-540-B1A (Lancair)	03/31/2016

Maintenance Manuals
Name	Revision	Lang	Subject	Date
MM HIO-390-A1A		en	HIO-390-A1A	09/30/2017
MM IO-360-N1A		en	IO-360-N1A	01/31/2016
MM IO-360-P1A		en	IO-360-P1A	01/31/2017
MM IO-390-C		en	IO-390-C Series	12/31/2016
MM IO-390-D		en	IO-390-D Series	02/29/2020
MM LIO-360-B1G6		en	LIO-360-B1G6	08/31/2017
MM LM-IO-540-AG1A5		en	IO-540-AG1A5 Series	10/31/2012
MM LM-O-540		en	O-540-A4E5 Series	05/31/2012
MM LM-YO-233		en	YO233B2A Series	05/31/2012
MM LM-YTEO-540		en	YTEO-540-B1A Non-Certified Series	11/30/2012
MM TEO-540-C1A		en	TEO-540-C1A	10/31/2018
MM TEO-540-C1A	1	en	TEO-540-C1A	03/31/2019
MM TEO-540-C1A	2	en	TEO-540-C1A	04/30/2021
MM TEO-540-C1A	3	en	TEO-540-C1A	06/30/2021
MM TEO-540-C1A	4	en	TEO-540-C1A	10/31/2021
MM YO-233-B2A		en	YO-233-B2A	01/31/2021
MM YTEO-540-B1A		en	YTEO-540-B1A (Lancair)	03/31/2016

Operator's Manuals
Name	Revision	Lang	Subject	Date
OM 60297-3, 2nd Ed		en	O-340 Series	05/31/1975
OM 60297-8, 3rd Ed	1	en	VO-435 & TVO-435 Series	04/30/1999
OM 60297-9, 4th Ed		en	O-235 and O-290 Series	12/31/1987
OM 60297-9, 5th Ed	1	en	O-235 and O-290 Series	12/31/2006
OM 60297-10, 4th Ed	3	en	O-540, IO-540 Series	02/28/2009
OM 60297-11, 2nd Ed		en	VO-360 & IVO-360 Helicopter	11/30/1999
OM 60297-12, 6th Ed	7	en	O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series	03/31/1989
OM 60297-12, 8th Ed	5	en	O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series	11/30/2009
OM 60297-13, 3rd Ed		en	TIO-541 Series	11/30/2007
OM 60297-14, 3rd Ed		en	GO-480, IGO-480, GSO-480 and IGSO-480 Series	06/30/2008
OM 60297-15, 3rd Ed		en	IGO-540, IGSO-540 Series	12/31/2007
OM 60297-16, 2nd Ed	4	en	O-320, IO-320, AIO-320, LIO-320 Series	02/28/1973
OM 60297-17, 2nd Ed		en	VO-540, IVO-540, TIVO-540 Series	04/30/2008
OM 60297-19, 4th Ed		en	IO-720 Series	09/30/2006
OM 60297-20, 1st Ed	1	en	TO-360 Series	07/31/1977
OM 60297-20, 1st Ed	3	en	TO-360 Series	04/30/1997
OM 60297-20, 2nd Ed		en	TO-360 Series	12/31/2007
OM 60297-21, 2nd Ed	1	en	AEIO-320, AEIO-360, AEIO-540 Series	05/31/2007
OM 60297-22, 1st Ed		en	O-320 76 Series	04/30/1976
OM 60297-22, 2nd Ed	1	en	O-320 76 Series	08/31/2008
OM 60297-23A, 4th Ed	3	en	TIO-540 Series Angle Valve Cylinder Heads	12/31/2012
OM 60297-23P, 4th Ed	2	en	TIO-540 Series Parallel Valve Cylinder Heads	09/30/2006
OM 60297-25, 1st Ed	1	en	O-360 76 Series	04/30/1978
OM 60297-25, 2nd Ed	1	en	O-360 76 Series	07/31/2008
OM 60297-26, 1st Ed		en	TO-360 76 Series	09/30/1980
OM 60297-26, 2nd Ed		en	TO-360 76 Series	06/30/2007
OM 60297-27, 2nd Ed		en	TIO-540-AE2A Series	10/31/2006
OM 60297-30, 3rd Ed		en	O-320 Series	10/01/2006
OM 60297-30, 3rd Ed	revised	en	O-320 Series	01/01/2007
OM 60297-31, 3rd Ed		en	IO-320 Series	12/31/2006
OM SSP-1570		en	TIGO-541-E1A	10/31/1988

Overhaul Manuals
Name	Revision	Lang	Subject	Date
OM 60294-7	10	en	Direct Drive	11/30/1974
OM 60298-1, 2nd Ed		en	O-290-D2 Series	09/01/1954

Publication Indexes
Name	Revision	Lang	Subject	Date
SSP-112	10	en	Service Bulletins Letters and Instructions Index	04/30/2020
SSP-112	11	en	Service Bulletins Letters and Instructions Index	11/30/2020
SSP-112	12	en	Service Bulletins Letters and Instructions Index	09/30/2021
SSP-112	13	en	Service Bulletins Letters and Instructions Index	01/31/2022
SSP-112	14	en	Service Bulletins Letters and Instructions Index	11/30/2023
SSP-112	2	en	Service Bulletins Letters and Instructions Index	08/31/2015
SSP-112	3	en	Service Bulletins Letters and Instructions Index	07/31/2017
SSP-112	4	en	Service Bulletins Letters and Instructions Index	12/31/2017
SSP-112	5	en	Service Bulletins Letters and Instructions Index	03/31/2018
SSP-112	6	en	Service Bulletins Letters and Instructions Index	06/30/2018
SSP-112	7	en	Service Bulletins Letters and Instructions Index	09/30/2018
SSP-112	8	en	Service Bulletins Letters and Instructions Index	12/31/2018
SSP-112	9	en	Service Bulletins Letters and Instructions Index	07/31/2019
SSP-297		en	Service Bulletin Index	04/30/1997
SSP-303		en	Service Bulletins, Letters and Instructions	07/31/2003

Service Bulletins
Name	Revision	Lang	Subject	Date
SB 0002	2	en	Rotating Component Service-Life Limit	03/06/1989
SB 0022	1	en	Mandatory Inspection/Modification of Overspeed Pickup Housing Assembly	03/01/1971
SB 0028	3	en	Replacement of Second Stage Gas Producer Cylinder Bolts MS9060-08 or MS9705-08 with New Bolts 1-110-262-01	04/15/1977
SB 0031		en	Replacement/Modification of Torquemeter Pressure Boost Pump 1-300-221-01/02 with/to 1-300-221-03/04	01/01/1975
SB 0033		en	Mandatory Introduction of Improved Compressor Rotor Assembly	09/25/1973
SB 0037		en	Conversion of Model T5313A Engines to Model T5313B Configuration	12/01/1973
SB 0042		en	Introduction of Improved Centrifugal Compressor Impeller	11/15/1974
SB 0048	2	en	Modification of All Fuel Regulators	11/30/1979
SB 0052		en	Special Inspection - Centrifugal Compressor Impeller 1-100-078-07 and -08	11/26/1985
SB 101C-72-00-0131		en	Engine - Avoidance of Certain Power Turbine Speeds	09/17/1990
SB 145	B	en	Obsolescence of Early Type Exhaust Valve Seats	01/13/1958
SB 169		en	Prevention of Detonation	12/15/1953
SB 174		en	Lockwiring of Surge Chamber and Sediment Bowl Capscrew on Diaphragm Fuel Pumps	09/01/1954
SB 176		en	Replacement of Accessory Drive Adapter Gasket	12/10/1954
SB 183	A	en	Mandatory Magneto Timing Discrepancies	05/06/1957
SB 201	E	en	Mandatory Inspection of Crankshaft Flange	04/23/1993
SB 201	F	en	Mandatory Inspection of Crankshaft Flange	03/26/2013
SB 210		en	Method of Correcting Fuel Dye Strains at Stud Locations in Supercharger Housing	09/10/1956
SB 225	B	en	Mandatory Replacement of Valve Rocker Thrust Washers	03/16/1992
SB 240	E	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	06/14/1968
SB 240	N	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	11/20/1995
SB 240	P	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	05/04/1998
SB 240	R	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	11/10/1999
SB 240	S	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	02/05/2003
SB 240	T	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	05/25/2006
SB 240	U	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	05/08/2009
SB 240	V	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	07/22/2010
SB 240	W	en	Mandatory Parts Replacement at Overhaul and During Repair or Maintenance	02/23/2012
SB 249	A	en	Replacement of Cast Counterweights with Forged Counterweights	05/20/1960
SB 253	A	en	Replacement of Propeller Flange Bushings	04/24/1959
SB 254	A	en	Replacement of Intercylinder Baffle Assembly	04/10/1959
SB 290		en	Propeller Leakdown Inspection. Replacement of Propeller Shaft OU Seal Rings and Sleeve	09/07/1962
SB 290	Supp 1	en	Propeller Leakdown Inspection. Replacement of Propeller Shaft OU Seal Rings and Sleeve	10/05/1962
SB 293	B	en	PART I: Inspection of Exhaust Valve Guides PART II: Installation of New Camshafts	05/26/1967
SB 295		en	Inspection and Replacement of Oil Pump Drive Shaft	07/12/1963
SB 297		en	Mandatory One-Piece Main and Primary Venturi for Marvel-Schebler MA-4-5 Carburetor	12/06/1963
SB 297	A	en	Mandatory One-Piece Main and Primary Venturi for Marvel-Schebler MA-4-5 Carburetor	07/03/1970
SB 298		en	Fuel and Oil Vent Restriction Requirement for AC Lightweight Diaphragm Fuel Pumps	04/20/1964
SB 300	A	en	Mandatory Crankshaft Propeller Flange Inspection	11/02/1964
SB 300	B	en	Mandatory Crankshaft Propeller Flange Inspection	10/06/1967
SB 301	B	en	Mandatory Maintenance Procedures and Service Limitations for Valves	02/18/1977
SB 302		en	Replacement of Connecting Rod Assemblies, P/N 74308 and 74503 in IO-360-A1A Engines	08/13/1965
SB 302	A	en	Replacement of Connecting Rod Assemblies, P/N 74308 and 74503 in IO-360-A1A Engines	10/25/1968
SB 303	B	en	Heavy Connecting Rods for High Speed Helicopter Engines	05/26/1972
SB 303	C	en	Heavy Connecting Rods for High Speed Helicopter Engines	08/11/1972
SB 303	D	en	Heavy Connecting Rods for High Speed Helicopter Engines	11/03/1972
SB 303	E	en	Heavy Connecting Rods for High Speed Helicopter Engines	08/10/1973
SB 303	F	en	Heavy Connecting Rods for High Speed Helicopter Engines	09/28/1973
SB 305	B	en	Bendix RS Fuel Injection Bulletin No. 18, Revision 4	09/30/1966
SB 307		en	Replacement of AC Oil Filter Adapter Gasket	03/04/1966
SB 308		en	Replacement of Crankshaft Idler Gear Shafts	03/01/1966
SB 308	B	en	Replacement of Crankshaft Idler Gear Shafts	05/26/1967
SB 314	A	en	Limited Travel Valve Lifter Replacement	08/25/1967
SB 314	C	en	Limited Travel Valve Lifter Replacement	12/19/1969
SB 319	B	en	Reduction Gear Assembly Inspection	01/30/1970
SB 326		en	Crankcase Bearing Dowel Replacement	04/17/1970
SB 326	A	en	Crankcase Bearing Dowel Replacement	07/22/1977
SB 327	C	en	Inspection of Center Main Bearing	01/19/1973
SB 328		en	Limited Travel Valve Lifter Replacement	06/19/1970
SB 330	A	en	Retighten and Lockwire Carburetor Throttle Arm Screw	10/30/1970
SB 330	B	en	Retighten and Lockwire Carburetor Throttle Arm Screw	04/20/1973
SB 335		en	Fuel Line Inspection and Support Clamp Installation	04/16/1971
SB 335	A	en	Fuel Line Inspection and Support Clamp Installation	04/14/1972
SB 336	B	en	Periodic Inspection and Lubrication of Magneto Distributor Bushing. Magneto Parts Replacement - Left Magneto	06/19/1972
SB 336	C	en	Periodic Inspection and Lubrication of Magneto Distributor Bushing. Magneto Parts Replacement - Left Magneto	12/15/1972
SB 339	A	en	Turbocharger Exhaust System Inspection and Modification	03/29/1974
SB 342	A	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	05/26/1992
SB 342	B	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	10/22/1993
SB 342	C	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	04/28/2000
SB 342	D	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	07/10/2001
SB 342	E	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	05/18/2004
SB 342	F	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	06/04/2010
SB 342	G	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	07/16/2013
SB 342	G, Supp 1	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	08/29/2013
SB 342	G, Supp 2	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	01/23/2014
SB 342	G, Supp 3	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	11/02/2015
SB 342	G, Supp 4	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	02/14/2017
SB 342	G, Supp 5	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	03/13/2017
SB 342	G, Supp 6	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	04/17/2017
SB 342	G, Supp 7	en	Mandatory Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation	02/27/2018
SB 350		en	Replacement of Torquemeter Oil Pump	07/21/1972
SB 351	A	en	Heavy Connecting Rods for High Speed Geared Drive Engines	04/27/1973
SB 351	B	en	Heavy Connecting Rods for High Speed Geared Drive Engines	11/22/1974
SB 356		en	Addition of Alternator Bracket Support	09/01/1972
SB 361		en	AiResearch Bulletin 1172-1A	02/16/1973
SB 362	A	en	Fuel Vent Line Check Valve Installation	12/14/1973
SB 364		en	Magneto Grommet Replacement	04/20/1973
SB 364	A	en	Magneto Grommet Replacement	07/05/1974
SB 366		en	Mandatory Carburetor Throttle Body Screw Inspection	09/14/1973
SB 366	A	en	Mandatory Carburetor Throttle Body Screw Inspection	10/12/2007
SB 366	B	en	Mandatory Carburetor Throttle Body Screw Inspection	04/18/2008
SB 366	C	en	Mandatory Carburetor Throttle Body Screw Inspection	06/02/2016
SB 367	C	en	Required Inspection of Part No. 69650 Piston Pin	12/07/1973
SB 367	D	en	Required Inspection of Part No. 69650 Piston Pin	03/08/1974
SB 367	F	en	Required Inspection of Part No. 69650 Piston Pin	08/16/1974
SB 367	F, Supp 1	en	Required Inspection of Part No. 69650 Piston Pin	09/17/1976
SB 369	I	en	Mandatory Engine Inspection after Overspeed	04/24/1991
SB 369	J	en	Mandatory Engine Inspection after Overspeed	11/22/2004
SB 369	K	en	Mandatory Engine Inspection after Overspeed	09/29/2010
SB 369	L	en	Mandatory Engine Inspection after Overspeed	04/18/2012
SB 369	M	en	Mandatory Engine Inspection after Overspeed	06/10/2016
SB 369	P	en	Mandatory Engine Inspection after Overspeed	09/19/2017
SB 369	Q	en	Mandatory Engine Inspection after Overspeed	04/26/2018
SB 369	R	en	Mandatory Engine Inspection after Overspeed	01/07/2019
SB 369	S	en	Mandatory Engine Inspection after Overspeed	04/08/2020
SB 371	A	en	Mandatory Connecting Rod Assemblies With High-Tensile Strength Bolts (New Rod Kits With High-Crush Bearings)	02/01/1974
SB 371	B	en	Mandatory Connecting Rod Assemblies With High-Tensile Strength Bolts (New Rod Kits With High-Crush Bearings)	05/04/1998
SB 372	A	en	High-Tensile T-Bolt Clamping Bands	03/15/1974
SB 374		en	Fuel Pump Inlet Inspection	03/15/1974
SB 375	A	en	Cross Shaft Support Tube Moisture Seal	05/10/1974
SB 376		en	Bendix Service Bulletin No. 556B	11/22/1974
SB 381	C	en	Mandatory Oil Pump Woodruff Key Drive and Impeller Replacement	11/07/1975
SB 382		en	Bendix Fuel System Bulletin No. RS43	01/17/1975
SB 385		en	Mandatory Oil Pump Impeller and Drive Replacement	04/04/1975
SB 385	C	en	Mandatory Oil Pump Impeller and Drive Replacement	10/03/1975
SB 385	C, Supp 1	en	Mandatory Oil Pump Impeller and Drive Replacement	03/18/1977
SB 388	A	en	Mandatory Procedure to Determine Exhaust Valve and Guide Condition	04/14/1978
SB 388	B	en	Mandatory Procedure to Determine Exhaust Valve and Guide Condition	05/13/1992
SB 388	C	en	Mandatory Procedure to Determine Exhaust Valve and Guide Condition	11/22/2004
SB 393	A	en	Mandatory Exhaust Slip Joint Modification	02/06/1976
SB 393	C	en	Mandatory Exhaust Slip Joint Modification	11/26/1976
SB 395		en	Transition Coupling Replacement	03/05/1976
SB 398		en	Mandatory Recommended Corrective Action for Use of Incorrect Fuel	04/30/1976
SB 398	A	en	Mandatory Recommended Corrective Action for Use of Incorrect Fuel	07/16/2010
SB 398	B	en	Mandatory Recommended Corrective Action for Use of Incorrect Fuel	11/22/2010
SB 399	A	en	Mandatory Action to Take If Loss of Oil Pressure	07/09/2010
SB 401		en	Mandatory Recommended Guidance After a Lightning Strike	06/30/1976
SB 401	A	en	Mandatory Recommended Guidance After a Lightning Strike	05/25/2017
SB 406	A	en	Mandatory Titan Fuel Pump Inspections	12/01/1997
SB 407		en	Oil Level Gage Assemblies	10/18/1976
SB 407	A	en	Oil Level Gage Assemblies	12/03/1976
SB 410		en	Bendix Service Bulletin No. 587	08/26/1977
SB 411	B	en	Mandatory Adapter Kit for Magneto Isolation Drive	12/18/1990
SB 411	C	en	Mandatory Adapter Kit for Magneto Isolation Drive	12/15/2009
SB 411	D	en	Mandatory Adapter Kit for Magneto Isolation Drive	11/30/2015
SB 412		en	Intake and Exhaust Valve Rocker Arm Retaining Stud	07/08/1977
SB 412	A	en	Intake and Exhaust Valve Rocker Arm Retaining Stud	09/02/1977
SB 412	B	en	Intake and Exhaust Valve Rocker Arm Retaining Stud	03/10/1978
SB 413		en	Hydraulic Tappet Face Inspection	07/08/1977
SB 414		en	Bendix Service Bulletin No. 589	08/26/1977
SB 415		en	Bendix Service Bulletin No. 590	08/26/1977
SB 416		en	Bendix Service Bulletin No. 584A	10/07/1977
SB 421		en	Fuel Line Between Fuel Pump and Fuel Injector	06/16/1978
SB 422	A	en	Crankshaft Assembly Replacement	12/22/1978
SB 423		en	Mandatory Oil Pump Inspection and Impeller Replacement	03/24/1978
SB 424		en	Mandatory Hydraulic Tappet Replacement	03/24/1978
SB 425	C	en	Mandatory Reprint of Teledyne Continental Ignition Systems Mandatory Service Bulletin No. MSB645	03/14/1997
SB 426		en	Turbocharger Oil Drain Flange Replacement	08/11/1978
SB 428		en	Mandatory Bendix Fuel Injector Bulletin No. RS-52	07/28/1978
SB 429		en	Mandatory Bendix Fuel Injector Service Bulletin No. RS-53	07/28/1978
SB 430		en	Mandatory Bendix Service Bulletin No. RS-54	07/28/1978
SB 432		en	Mandatory Slick Electro Service Bulletin No. l-78 "Magneto/Condenser Replacement"	10/16/1978
SB 433	A	en	Mandatory Bendix Service Bulletin No. W-57, Rev. 1	01/12/1979
SB 434		en	Mandatory Marvel-Schebler/Tillotson Service Bulletin No. Al-79	03/23/1979
SB 435		en	Replacement of Upper Exhaust Spring Seat and Hydraulic Lifter	03/17/1979
SB 439	A	en	Mandatory Inspection of Connecting Rods for Fretting and/or Galling and Repair of Fretting	08/18/1993
SB 444	A	en	Bendix Bulletin No. RS-62, Rev 2	09/04/1981
SB 446	B	en	Mandatory The Use of Textron Lycoming LW-16702 Oil Additive	09/08/1980
SB 446	C	en	Mandatory The Use of Textron Lycoming LW-16702 Oil Additive	11/23/1984
SB 446	D	en	Mandatory The Use of Textron Lycoming LW-16702 Oil Additive	03/10/1999
SB 446	E	en	Mandatory The Use of Textron Lycoming LW-16702 Oil Additive	07/18/2008
SB 447		en	Mandatory Inspection of Upper Exhaust Valve Spring Seats	01/11/1980
SB 447	B	en	Mandatory Inspection of Upper Exhaust Valve Spring Seats	01/20/1995
SB 448		en	Mandatory Turbocharger Transition Waste Gate Assembly	02/22/1980
SB 448	A\	en	Mandatory Turbocharger Transition Waste Gate Assembly	11/20/1995
SB 450		en	AiResearch Service Bulletin No. TP60-0119	09/05/1980
SB 453	C	en	Mandatory Aluminum Push Rods P/N 73806 on O-235 Series Engines	07/03/1993
SB 453	D	en	Mandatory Aluminum Push Rods P/N 73806 on O-235 Series Engines	01/10/1997
SB 454	B	en	Replacement of Oil Pump Impellers	01/02/1987
SB 455	A	en	Replacement of Oil Pump Impellers	04/24/1981
SB 455	B	en	Replacement of Oil Pump Impellers	05/28/1982
SB 455	D	en	Replacement of Oil Pump Impellers	01/02/1987
SB 456	A	en	Mandatory Replacement of Sintered Iron Oil Pump Impellers	09/25/1981
SB 456	C	en	Mandatory Replacement of Sintered Iron Oil Pump Impellers	01/02/1987
SB 456	F	en	Mandatory Replacement of Sintered Iron Oil Pump Impellers	02/08/1993
SB 464	A	en	Bendix Service Bulletin Revision No. 623A	10/18/1985
SB 465	A	en	Mandatory Crankshaft Flange Inspection for Aerobatic Engines	01/06/1984
SB 465	C	en	Mandatory Crankshaft Flange Inspection for Aerobatic Engines	07/02/1993
SB 467		en	Bendix Bulletin No. RS-88	06/17/1983
SB 468	B	en	Mandatory Slick Service Bulletin No. SB 2-88	10/12/1988
SB 469		en	Bendix Service Bulletin No. 627	10/18/1985
SB 471		en	Mandatory Avco Lycoming Oil Additive P/N LW-16702	09/20/1985
SB 471	B	en	Mandatory Avco Lycoming Oil Additive P/N LW-16702	02/20/2009
SB 475	A	en	Mandatory Crankshaft Gear Modification and Assembly Procedures	07/16/1990
SB 475	B	en	Mandatory Crankshaft Gear Modification and Assembly Procedures	04/23/1993
SB 475	C	en	Mandatory Crankshaft Gear Modification and Assembly Procedures	01/30/2003
SB 475	C, Supp 1	en	Mandatory Crankshaft Gear Modification and Assembly Procedures	09/12/2016
SB 477 (w/Supp 1)	A	en	Mandatory Inspection and Rework of P/N LW-18790 Rocker Arm Assembly	02/16/1987
SB 480		en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	01/18/1988
SB 480	A	en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	05/04/1998
SB 480	C	en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	02/26/1999
SB 480	D	en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	07/13/2000
SB 480	E	en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	04/13/2005
SB 480	F	en	Mandatory Oil Servicing, Metallic Solids Identification After Oil Servicing, and Associated Corrective Action	05/25/2017
SB 481		en	Facet Aerospace Products Service Bulletin No. A1-87	12/09/1987
SB 484		en	Inspection, Alignment and Modification of Crossover Exhaust Assembly	01/30/1989
SB 485		en	Mandatory Reprint of Precision Airmotive Corporation Service Bulletin #PRS-92	06/01/1989
SB 486		en	Inspection of Single Belt Driven Ring Gear Support Assemblies	08/04/1989
SB 487		en	Mandatory Fuel Pump Vent Restriction	07/07/1989
SB 488	A	en	Mandatory Propeller Governor Line Support	04/02/1990
SB 491	A	en	Mandatory Inspection of Exhaust Transition Bolts	02/21/1990
SB 494		en	Mandatory Installation of Restricted Fuel Pump Vent Fittings	11/01/1990
SB 497		en	Mandatory Installation of New, Restricted Fuel Pump Vent Fittings in an Drive Fuel Pumps	11/15/1990
SB 499		en	Mandatory Installation of One-Piece Exhaust Pipe Kit (05K21503)	03/19/1991
SB 499	A	en	Mandatory Installation of One-Piece Exhaust Pipe Kit (05K21503)	06/14/1991
SB 499	B	en	Mandatory Installation of One-Piece Exhaust Pipe Kit (05K21503)	03/22/1993
SB 501	B	en	Recall of Piston Pin Part No. LW-14077	11/15/1991
SB 504		en	Mandatory Consolidated Fuel Systems Inc. Mandatory Service Bulletin No. CF1-92, Rev 1 - Carburetor Float Kit CF666-915 with CF30-766 Float Date Stamped 1091	08/17/1992
SB 505		en	Mandatory Inspection of Crankshaft I.D. for Corrosion	08/19/1994
SB 505	A	en	Mandatory Inspection of Crankshaft I.D. for Corrosion	10/18/1994
SB 505	B	en	Mandatory Inspection of Crankshaft I.D. for Corrosion	12/01/1997
SB 516	A	en	Mandatory Inspection and Removal of TCM and Bendix S-20 and S-1200 Series Impulse Coupling Magnetos	09/09/2016
SB 517		en	Mandatory Reprint of Teledyne Continental Motors Critical Service Bulletin No. CSB641	02/25/1994
SB 518		en	Mandatory Inspection of Thermostatic Oil Cooler Bypass Valves	11/04/1994
SB 518	A	en	Mandatory Inspection of Thermostatic Oil Cooler Bypass Valves	02/03/1995
SB 518	B	en	Mandatory Inspection of Thermostatic Oil Cooler Bypass Valves	03/21/1995
SB 518	C	en	Mandatory Inspection of Thermostatic Oil Cooler Bypass Valves	05/02/1995
SB 518	D	en	Mandatory Inspection of Thermostatic Oil Cooler Bypass Valves	08/16/2016
SB 519		en	Mandatory Removal of Shroud Tube Retaining Springs LW-14995 on Specified Engine and Affected Spares Before Further Notice	05/25/1994
SB 520		en	Mandatory Incorrect Piston Shipped with Cylinder Kits P/N 05K21108, P/N 05K21118 and P/N 05K21104	07/22/1994
SB 522		en	Mandatory Inspection and Replacement of Push Rod P/N 73806	11/01/1994
SB 524		en	Mandatory I. Replacement of Sintered Iron Oil Pump Impellers II. Replacement of Aluminum Oil Pump Impellers	09/01/1995
SB 524	Supp 1	en	Mandatory I. Replacement of Sintered Iron Oil Pump Impellers II. Replacement of Aluminum Oil Pump Impellers	01/18/1996
SB 525		en	Mandatory Inspection of High-Pressure Fuel Pump P/N LW-15473	09/03/1996
SB 525	A	en	Mandatory Inspection of High-Pressure Fuel Pump P/N LW-15473	10/07/1996
SB 526		en	Mandatory Replacement of Impulse Coupling Springs or Impulse Coupling Assembly on TCM (Bendix) D-2000 and D-3000 Impulse Dual Magnetos	02/24/1997
SB 527	A	en	Mandatory Recall of Piston Pin Part No. LW-14077	10/01/1996
SB 527	B	en	Mandatory Recall of Piston Pin Part No. LW-14077	10/08/1996
SB 527	C	en	Mandatory Recall of Piston Pin Part No. LW-14077	04/18/1997
SB 528		en	Mandatory Reprint of Teledyne Continental Ignition System Service Bulletin No. SB658	01/10/1997
SB 529		en	Mandatory Reprint - Crane/Lear Romec Service Bulletin No. 101SB020	12/01/1997
SB 529	A	en	Mandatory Reprint - Crane/Lear Romec Service Bulletin No. 101SB020	08/02/1999
SB 529	B	en	Mandatory Reprint - Crane/Lear Romec Service Bulletin No. 101SB020	06/10/2002
SB 530		en	Mandatory Application of Protective Coating on Crankshaft	12/01/1997
SB 530	A	en	Mandatory Application of Protective Coating on Crankshaft	06/29/1998
SB 530	B	en	Mandatory Application of Protective Coating on Crankshaft	11/22/2004
SB 530	B, Supp 1	en	Mandatory Application of Protective Coating on Crankshaft	10/10/2014
SB 531		en	Mandatory Insepction of Turbochargers and Tailpipes on TIO-540-AE2A Engines	01/15/1997
SB 532	Supp 1	en	Mandatory Reprint - Precision Airmotive Corporation Service Bulletin No. PRS-103	10/12/1998
SB 533	A	en	Mandatory Recommended Action for Sudden Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip	08/09/1999
SB 533	B	en	Mandatory Recommended Action for Sudden Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip	10/04/2012
SB 533	C	en	Mandatory Recommended Action for Sudden Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip	10/18/2016
SB 534		en	Mandatory I. Turbocharger Oil Drain Tank Inspection II. Turbocharger Oil Drain Tank Replacement	03/24/1999
SB 537		en	Mandatory Reprint of Slick Service Bulletin No. SB1-98	11/20/1998
SB 538	A	en	Air Inlet Tube Replacement	08/02/1999
SB 539	A	en	Mandatory Reprint of Crane/Lear Romec Service Bulletins No. RG9080-73-001, No. RG9570-73-001, and No. RG17980-73-001	11/22/2000
SB 540		en	Mandatory Valve Seat Inspection	10/11/1999
SB 541		en	Mandatory Reprint of Teledyne Continental Motors (TCM) Ignition Systems Critical Service Bulletin No. CSB662A	02/22/2000
SB 543	A	en	Mandatory Oil Filter Converter Plate Gasket Replacement (Owner Advisory)	08/30/2000
SB 543	A, Supp 1	en	Mandatory Oil Filter Converter Plate Gasket Replacement	10/04/2000
SB 543	B	en	Mandatory Oil Filter Converter Plate Gasket Replacement	07/01/2003
SB 543	C	en	Mandatory Oil Filter Converter Plate Gasket Replacement	09/29/2010
SB 543	C, Supp 1	en	Mandatory Oil Filter Converter Plate Gasket Replacement	08/31/2012
SB 544	A	en	Mandatory Bearing Replacement - Part Identification	04/02/2003
SB 544	B	en	Mandatory Bearing Replacement - Part Identification	10/06/2006
SB 545		en	Mandatory Oil Filler Tube Replacement	02/20/2001
SB 545	A	en	Mandatory Oil Filler Tube Replacement	10/02/2001
SB 547		en	Mandatory Connecting Rod Bearing Replacement on TIO-540-AE2A Model Engines (Compliance with Textron Lycoming Special Advisory No. 59-800)	03/07/2001
SB 547	Supp 1	en	Mandatory Connecting Rod Bearing Replacement on TIO-540-AE2A Model Engines (Compliance with Textron Lycoming Special Advisory No. 59-800)	04/28/2003
SB 548		en	Mandatory Diaphragm - Type Fuel Pump Inspection/Replacement	03/08/2001
SB 548	A	en	Mandatory Diaphragm - Type Fuel Pump Inspection/Replacement	08/31/2005
SB 549		en	Mandatory Engine/Crankshaft Inspection	03/23/2001
SB 549	Supp 1	en	Mandatory Engine/Crankshaft Inspection	10/05/2001
SB 550		en	Mandatory Crankshaft Replacement in Lycoming TIO & LTIO-540 Engines Rated at 300 Horsepower and Higher (Info)	02/01/2002
SB 552		en	Mandatory Crankshaft Replacement in Lycoming TIO & LTIO-540 Engines Rated at 300 Horsepower and Higher	04/16/2002
SB 552	Supp 1	en	Mandatory Crankshaft Replacement in Lycoming TIO & LTIO-540 Engines Rated at 300 Horsepower and Higher	09/05/2002
SB 553		en	Mandatory Crankshaft Inspection for Lycoming Six Cylinder Turbocharged Engines	09/16/2002
SB 553	Supp 1	en	Mandatory Crankshaft Inspection for Lycoming Six Cylinder Turbocharged Engines	12/16/2002
SB 554		en	Mandatory Crankshaft Gear Retaining Bolt Replacement	09/30/2002
SB 554	Supp 1	en	Mandatory Crankshaft Gear Retaining Bolt Replacement	09/30/2002
SB 554	Supp 2	en	Mandatory Crankshaft Gear Retaining Bolt Replacement	11/04/2002
SB 554	Supp 3	en	Mandatory Crankshaft Gear Retaining Bolt Replacement	11/12/2002
SB 554	Supp 4	en	Mandatory Crankshaft Gear Retaining Bolt Replacement	04/02/2003
SB 554	Supp 5	en	Mandatory Crankshaft Gear Retaining Bolt Replacement	08/15/2003
SB 555		en	Mandatory Oil Pump Body Plug Inspection	11/25/2002
SB 555	A	en	Mandatory Oil Pump Body Plug Inspection	05/16/2003
SB 555	Supp 1	en	Mandatory Oil Pump Body Plug Inspection	01/08/2003
SB 555	Supp 2	en	Mandatory Oil Pump Body Plug Inspection	01/20/2003
SB 556		en	Mandatory Replacement of Washer P/N LW-11201	01/29/2003
SB 557		en	Mandatory Reprint - Precision Airmotive Corporation SB No. PRS-105	05/07/2003
SB 558		en	Mandatory Inspection of Oil Suction Screen Area for Casting Voids	11/17/2003
SB 559		en	Mandatory Reprint - Kelly Aerospace Power Systems (Electrosystems) SB No. A-112, Rev. A	03/23/2004
SB 561		en	Mandatory Connecting Rod Bearing Replacement on (L)TIO-540-U2A, -V2AD & -W2A Engines	08/06/2004
SB 564		en	Mandatory Inspection of Suction Screen Length	12/10/2004
SB 564	A	en	Mandatory Inspection of Suction Screen Length	08/22/2008
SB 565		en	Mandatory Diaphragm - Type Fuel Pump Inspection/Replacement	02/21/2005
SB 566		en	Mandatory Crankshaft Replacement in Lycoming Engines (Info)	07/11/2005
SB 566	Supp 1	en	Mandatory Crankshaft Replacement in Lycoming Engines	11/30/2005
SB 568		en	Mandatory Reprint of Slick Aircraft Products Service Bulletin No. SB1-88B	03/27/2006
SB 569		en	Mandatory Crankshaft Retirement for Certain Lycoming Engines	02/21/2006
SB 569	A	en	Mandatory Crankshaft Retirement for Certain Lycoming Engines	04/11/2006
SB 569	A, Supp 1	en	Mandatory Crankshaft Retirement for Certain Lycoming Engines	05/27/2009
SB 571		en	Mandatory Reprint of Sky-Tec Service Bulletin No. 2006-3-1 (Replacement of Specified Sky-Tec Starters - Model 31B22101/149-24PM)	05/05/2006
SB 572		en	Mandatory Missing Oil Passage Hole at Idler Shaft Location	10/30/2006
SB 573		en	Mandatory Pressurized Magneto Pressure Tests	02/23/2007
SB 573	Supp 1	en	Mandatory Pressurized Magneto Pressure Tests	03/16/2007
SB 574		en	Mandatory Cylinder Stud Hole Cross-Threaded	02/23/2007
SB 574	A	en	Mandatory Cylinder Stud Hole Cross-Threaded	07/20/2007
SB 576		en	Mandatory Reprint of Teledyne Continental Ignition Systems Service Bulletin No. SB633A	09/21/2007
SB 577		en	Mandatory Reprint of Sky-Tec Service Bulletin No. 07-01, Rev D (Sky-Tec PM Model Starter Replacement)	05/17/2007
SB 577	A	en	Mandatory Reprint of Sky-Tec Service Bulletin No. 07-01, Rev D (Sky-Tec PM Model Starter Replacement)	09/19/2008
SB 578		en	Mandatory Incorrect Cylinder Assemblies Shipped with Cylinder Kits	09/21/2007
SB 579		en	Mandatory Clearance Between Oil Sump Assembly and Oil Sump Baffle	11/16/2007
SB 580		en	Mandatory Reprint of Kelly Aerospace Service Bulletin No. 029	02/15/2008
SB 581		en	Mandatory Reprint of Precision Airmotive MANDATORY Service Bulletin Nos. PRS-107, Rev 4 and PEX-1, Rev 1	03/13/2008
SB 581	A	en	Mandatory Reprint of Precision Airmotive MANDATORY Service Bulletin Nos. PRS-107, Rev 4 and PEX-1, Rev 1	11/19/2008
SB 582		en	Mandatory Reprint of Precision Airmotive MANDATORY Service Bulletin No. MSA-13	07/18/2008
SB 582	A	en	Mandatory Reprint of Precision Airmotive MANDATORY Service Bulletin No. MSA-13	10/10/2008
SB 582	A, Supp 1	en	Mandatory Reprint of Precision Airmotive MANDATORY Service Bulletin No. MSA-13	12/15/2009
SB 583		en	Mandatory Reprint of MANDATORY Unison Service Bulletin No. SB2-08	06/03/2008
SB 583	A	en	Mandatory Reprint of MANDATORY Unison Service Bulletin No. SB2-08	07/21/2008
SB 584		en	Mandatory Reprint of MANDATORY Unison Service Bulletin No. SB3-08A	06/03/2008
SB 584	A	en	Mandatory Reprint of MANDATORY Unison Service Bulletin No. SB3-08A	07/24/2008
SB 584	B	en	Mandatory Reprint of MANDATORY Unison Service Bulletin No. SB3-08A	10/17/2008
SB 585		en	Mandatory Incorrect Exhaust Valve Rotator Cap Shipped with Cylinder Kits P/N 05K21119, 05K21121, and 05K21122	03/17/2009
SB 590	A	en	Mandatory Use of Aircraft Boost Pump with Kelly Aerospace 200F Series (Lycoming P/N 62E23185, 62E23186, 62E23187, 62E23188, 62E23189) Fuel Pumps	11/13/2009
SB 591		en	Mandatory Reprint of Kelly Mandatory Service Bulletin No. 039A, Turbine Wheel Replacement	03/19/2010
SB 591	A	en	Mandatory Reprint of Kelly Mandatory Service Bulletin No. 039A, Turbine Wheel Replacement	05/10/2010
SB 592		en	Mandatory Engine Inspection After Overboost	09/29/2010
SB 593		en	Mandatory Intake Valve P/N 17A23942 Inspection for Date Stamp	08/24/2010
SB 593	A	en	Mandatory Intake Valve P/N 17A23942 Inspection for Date Stamp	07/23/2014
SB 593	B	en	Mandatory Intake Valve P/N 17A23942 Inspection for Date Stamp	07/06/2015
SB 594		en	Mandatory Reprint of Hartzell Engine Technologies LLC (HET) (formerly Kelly Aerospace) Mandatory Service Bulletin 040 A	01/10/2011
SB 595		en	Mandatory Torque Values for Screws that Attach Ignition Harness Attachment Plate (for S-20 and S-200 Series Teledyne Continental Motors (TCM) Magnetos)	05/06/2011
SB 596		en	Mandatory Reprint of AVStar Mandatory Service Bulletin AFSSB6 Revision 2	04/27/2011
SB 597		en	Mandatory Fuel Drain Valve Adapter Assembly P/N LW-13807	05/04/2011
SB 598	A	en	Mandatory V-Band Clamp P/N LW-12125-3 (Aeroquip P/N NH1008723-10) and LW-12093-6 (Aeroquip P/N MVT69183-225) on Turbocharged Engines	06/01/2011
SB 599		en	Mandatory Compliance with Hartzell Engine Technologies, LLC (Previously Kelly Aerospace) Service Bulletin No. 045, 201F Fuel Pump Inspection and Recall	03/14/2012
SB 601		en	Mandatory Non-Compliant Oil Fill Tubes P/N 77527	11/22/2011
SB 602		en	Mandatory Incorrect Part Numbers on Service Instruction No. 1098G	03/08/2012
SB 603		en	Mandatory Reprint of Slick Service Bulletin SB112	10/04/2012
SB 603	Supp 1	en	Mandatory Reprint of Slick Service Bulletin SB112	10/09/2012
SB 604		en	Mandatory Compliance with Hartzell Engine Technologies (HET), LLC (Previously Kelly Aerospace) Alert Service Bulletin No. 048 dated 11/16/2012, Turbocharger model TAO411, P/N 4101880019 Turbine Wheel Replacement	11/21/2012
SB 606		en	Mandatory Correction of Engine Data Plate on IO-540-AE1A5 Engines	02/13/2014
SB 608		en	Mandatory Replacement of Hartzell Engine Technologies Fuel Pump Assemblies	02/06/2014
SB 608	Supp 1	en	Mandatory Replacement of Hartzell Engine Technologies Fuel Pump Assemblies	05/07/2015
SB 612		en	Mandatory Oil Level Gage Replacement	04/05/2016
SB 613		en	Mandatory Compliance with Hartzell Engine Technologies (HET), LLC (Previously Kelly Aerospace) Alert Service Bulletin No. 057 dated 2/11/14, Turbocharger Back Plate Assembly P/N 4067950058 Replacement	03/06/2014
SB 614		en	Mandatory Exhaust System Inspection and Turbocharger Mounting Bracket Replacement	07/24/2014
SB 614	A	en	Mandatory Exhaust System Inspection and Turbocharger Mounting Bracket Replacement	10/10/2014
SB 615		en	Mandatory Diaphragm-Type Fuel Pump Replacement	12/05/2014
SB 617		en	Mandatory Fuel Pumps P/N 62B26931 Shipped from the Factory from December 16, 2014 through January 14, 2015 not Marked with "SB615" Stamp	02/05/2015
SB 619		en	Mandatory Hardness Check for Rocker Arm, Part Number LW-15014	04/09/2015
SB 621	A	en	Mandatory Diaphragm-Type Fuel Pump Replacement	09/02/2015
SB 621	B	en	Mandatory Diaphragm-Type Fuel Pump Replacement	10/05/2015
SB 622		en	Mandatory Reprint of Slick/Champion Aerospace Service Bulletin SB1-15A	07/23/2015
SB 622	A	en	Mandatory Reprint of Slick/Champion Aerospace Service Bulletin SB1-15A	03/13/2019
SB 623		en	Mandatory Reprint of Hartzell Engine Technologies (HET) Service Bulletin SB-062	02/03/2016
SB 624		en	Mandatory Reprint of Hartzell Engine Technologies (HET) Service Bulletin SB-065	06/17/2016
SB 625		en	Mandatory Alternator Fan Backplate	02/02/2016
SB 626		en	Mandatory AVStar Flow Divider (Lycoming Fuel Manifold) Inspection	06/29/2016
SB 626	A	en	Mandatory AVStar Flow Divider (Lycoming Fuel Manifold) Inspection	12/20/2017
SB 627		en	Mandatory Exhaust System Inspection	07/18/2016
SB 627	A	en	Mandatory Exhaust System Inspection	08/31/2016
SB 627	B	en	Mandatory Exhaust System Inspection	10/18/2016
SB 627	C	en	Mandatory Exhaust System Inspection	11/17/2016
SB 627	C, Supp 1	en	Mandatory Exhaust System Inspection	06/27/2017
SB 627	D	en	Mandatory Exhaust System Inspection	04/10/2018
SB 627	E	en	Mandatory Exhaust System Inspection	05/17/2018
SB 628		en	Mandatory Reprint of Hartzell Engine Technologies (HET) Alert Service Bulletin (ASB) 076	08/29/2017
SB 628	A	en	Mandatory Reprint of Hartzell Engine Technologies (HET) Alert Service Bulletin (ASB) 076	12/08/2022
SB 630		en	Mandatory Connecting Rod Bushing Inspection After Cylinder Removal	04/10/2017
SB 630	A	en	Mandatory Connecting Rod Bushing Inspection After Cylinder Removal	06/13/2017
SB 630	B	en	Mandatory Connecting Rod Bushing Inspection After Cylinder Removal	06/11/2025
SB 632		en	Mandatory Identification of Connecting Rods with Non-Conforming Small End Bushings	07/17/2017
SB 632	A	en	Mandatory Identification of Connecting Rods with Non-Conforming Small End Bushings	07/23/2017
SB 632	B	en	Mandatory Identification of Connecting Rods with Non-Conforming Small End Bushings	08/04/2017
SB 633		en	Mandatory Oil Level Gage (Dipstick) Replacement	12/20/2017
SB 634		en	Mandatory Cylinder and Head Assembly Serviceable Life	10/11/2018
SB 637		en	Mandatory Reprint of Slick/Champion Aerospace Service Bulletin SB1-19	03/14/2019
SB 639		en	Mandatory Inspection of Rocker Arm, Part Number LW-15014	01/17/2020
SB 642		en	Mandatory Incorrect Piston and Ring Combination	03/22/2021
SB 642	A	en	Mandatory Incorrect Piston and Ring Combination	06/16/2021
SB 643		en	Mandatory Crankcase Nut Safety Wire Inspection	09/16/2021
SB 645		en	Mandatory Small End Connecting Rod Bushing Inspection	09/24/2021
SB 646		en	Mandatory T-Bolt Clamp Inspection	01/14/2022
SB 646	A	en	Mandatory T-Bolt Clamp Inspection	04/22/2022
SB 647		en	Mandatory Incorrect Markings on Service Tool# ST-310	12/14/2021
SB 648		en	Mandatory Wastegate Solenoid Valve Inspection and Cleaning	12/02/2021
SB 648	A	en	Mandatory Wastegate Solenoid Valve Inspection and Cleaning	02/21/2022
SB 648	B	en	Mandatory Wastegate Solenoid Valve Inspection and Cleaning	04/04/2022
SB 648	C	en	Mandatory Wastegate Solenoid Valve Inspection and Cleaning	02/20/2025
SB 649		en	Mandatory Installation of Correct Electronic Ignition System (EIS)	12/08/2022
SB 650		en	Mandatory Intake Pipe and Flange Inspection	01/04/2023
SB 651		en	Mandatory Inspection for Rotator Caps on Intake Valves	09/29/2022
SB 653		en	Mandatory Hartzell Engine Tech (HET) Alert Service Bulletin (ASB) No. 098	09/08/2023
SB 655		en	Mandatory Hartzell Engine Tech (HET) Service Bulletin (SB) No. 203	01/04/2024
SB 656		en	Mandatory Replacement of 6-Cylinder Electronic Ignition System (EIS)	02/13/2024
SB 656	A	en	Mandatory Replacement of 6-Cylinder Electronic Ignition System (EIS)	04/02/2025
SB 658		en	Mandatory Starter Inspection, Hartzell Engine Tech (HET) Service Bulletin (SB) No.211	01/08/2025
SB 660		en	Mandatory Reprint of Slick/Champion Aerospace Service Bulletin SB1-24A	09/20/2024
SB 661		en	Mandatory STD-35 Plain Washer Replacement	02/20/2025
SB 5508-0013		en	Introduction of Accessory Drive Gear Assembly 2-070-000-11 and No. 3 Bearing Support 2-060-261-04	03/15/1978
SB 5508-003		en	Special Inspection of Compressor Bleed Band
SB 5508-0031	1	en	Special One Time Inspection of First Turbine Rotor Assembly	08/19/1986
SB 5508-007		en	Introduction of Improved Bleed Band 2-161-182-03 and New Retainers 2-160-561-01	04/30/1976
SB 41000470-67A-05	1	en	Alert Flight Controls - Hydraulic Servo Actuator Inspection for Damaged Locking Washer	10/19/2000
SB 41105950-67A-01		en	Alert Flight Controls - Hydraulic Irreversible and Servo Actuator Inspection for Damaged Locking Washer	10/19/2000
SB A-ALF 502R 73-12	1	en	Alert Fuel - Fuel Control - Introduction of Improved Fuel Control That Incorporates a Special Fuel Schedule and Bleed Band Operating Limits	04/07/1992
SB A-ALF 502R 73-12	2	en	Alert Fuel - Fuel Control - Introduction of Improved Fuel Control That Incorporates a Special Fuel Schedule and Bleed Band Operating Limits	03/04/1993
SB A-LT101-72-50-0163	1	en	Alert Turbine Section - One Time Inspection Winged No. 2 Bearing P/N 4-301-362-01	03/08/1994
SB ALF 502 72-0002	22	en	Time Limits - Component Service-Life Limits	12/23/1992
SB ALF 502-72-0004	11	en	Component Service-Life Limits	06/17/1987
SB ALF 502-72-0008	1	en	Replacement of No. 4 and 5 Bearing Oil Inlet Tubes	10/14/1980
SB ALF 502-72-0010		en	Introduction of Improved Fourth Turbine Nozzle and Fireshield	10/14/1980
SB ALF 502-72-0038	1	en	Introduction of Improved Fourth Turbine Rotor Assembly	03/04/1983
SB ALF 502-79-0092		en	Introduction of Improved Chip Detector	05/04/1984
SB ALF502L-72-0137		en	Compressor Section - Fourth Stage Compressor Vane Assembly - Inspection of Fourth Stage Compressor Vane Assembly	03/27/1986
SB ALF502L-72-0163		en	Gas Producer - Introduction of Turbine Spacers 2-121-071-31/-35	06/08/1987
SB ALF502L 72-203	3	en	Engine - Third Stage Disc - Special Inspection of Third Stage Disc Assembly 2-101-630-04/-05	12/07/1990
SB ALF502L 72-259		en	Engine - Compressor Rotor Third Stage Disc Assembly - One Time Inspection/Replacement of Compressor Rotor Third Stage Disc Assembly Coated with Suspect Sermetal W	08/13/1991
SB ALF502L 72-270		en	Engine - Shaft Assembly - Introduction of Improved or Reworked Third Turbine Rotor Shaft Assembly (Bladed or Unbladed)	04/30/1993
SB ALF502R-72-0160	1	en	Reduction Gear and Shaft - Chip Detector Inspection Requirements	03/23/1987
SB ALF502R-72-0160	2	en	Reduction Gear and Shaft - Chip Detector Inspection Requirements	05/26/1987
SB ALF502R-72-0163		en	Gas Producer - Introduction of Turbine Spacers 2-121-071-31/35	06/08/1987
SB ALF502R-79-0162		en	Oil-Distribution - One Time Inspection of Oil Filter Bypass Valve	03/23/1987
SB ALF502R-79-0162	1	en	Oil-Distribution - One Time Inspection of Oil Filter Bypass Valve	05/26/1987
SB ALF502R-79-0162	2	en	Oil-Distribution - One Time Inspection of Oil Filter Bypass Valve	09/08/1987
SB ALF502R 72-203	2	en	Engine - Gas Producer Module - Special Inspection of Third Stage Disc Assembly 2-101-630-04/-05	08/08/1990
SB ALF502R 72-218	1	en	Engine - Gas Producer Module - Alternate Special Inspection of Third Stage Disc Assembly 2-101-630-04/-05	12/01/1989
SB ALF502R 72-237		en	Engine - Gas Producer Module - Third Stage Compressor Disc Assembly 2-101-630-04/-05 Alternate Special Inspection	11/30/1989
SB ALF502R 72-259		en	Engine - Compressor Rotor Third Stage Disc Assembly - One Time Inspection/Replacement of Compressor Rotor Third Stage Disc Assembly Coated with Suspect Sermetal W	08/13/1991
SB ALF502R 72-270	1	en	Engine - Shaft Assembly - Introduction of Improved or Reworked Third Turbine Rotor Shaft Assembly (Bladed or Unbladed)	03/31/1992
SB ALF502R 72-281		en	Engine-Components - Removal of Certain Time/Life Sensitive Rotating Components	02/07/1992
SB LT 101-71-00-0002	12	en	Rotating Component Service-Life Limit	05/31/1991
SB LT 101-72-00-0093	2	en	Power Turbine Rotor Periodic Inspection	05/12/1987
SB LT 101-72-00-0093	3	en	Power Turbine Rotor Periodic Inspection	05/29/1987
SB LT 101-72-00-0093	5	en	Power Turbine Rotor Periodic Inspection	01/15/1990
SB LT 101-72-30-0088	5	en	Introduction of Improved Axial Compressors P/N 4-101-006-28/-32/-39/-41	09/25/1992
SB LT 101-72-40-0103		en	Rear Bearing Support Housing (RBSH) Cleaning Procedure	01/15/1988
SB LT 101-72-50-0079	1	en	Introduction of Improved Gas Producer Turbines	04/21/1986
SB LT 101-72-50-0144		en	Turbine Section - One Time Inspection Power Turbine Rotor Assembly P/N 4-141-290-01/03	01/15/1993
SB LT 101-72-50-0145		en	Turbine Section - One Time Inspection Power Turbine Rotor Assembly P/N 4-141-290-01	11/27/1991
SB LT 101-72-50-0150		en	Turbine Section - One Time Inspection of Gas Producer Rotor Discs P/N 4-111-015-04, -09, -14	09/01/1993
SB LT 101-73-20-0165		en	Fuel System - One Time Inspection of Fuel Pump Internal Drive Spline	09/01/1994
SB LT 101-77-30-0104	1	en	Chip Detector Inspection Requirements	03/18/1988
SB LTS 101A-73-0043		en	Introduction of Overspeed Limiter	03/21/1983
SB LTS 101B-72-50-0116	6	en	Power Turbine Retention System - Installation	08/14/1992
SB LTS 101B-72-50-0122	4	en	Introduction of Power Turbine Retention System and Improved Power Turbine Rotor Assembly	06/17/1991
SB LTS 101B-73-10-0127	2	en	Engine Fuel and Control - Introduction of Over Speed Protection System	08/14/1992
SB LTS 101C-72-00-0131		en	Engine - Avoidance of Certain Power Turbine Speeds	09/17/1990
SB LTS 101C-72-50-0119	2	en	Introduction of Power Turbine Retention System and Improved Power Turbine Rotor Assembly	06/17/1991
SB LTS 101C-73-10-0129	3	en	Engine Fuel and Control - Introduction of Over Speed Protection System	08/14/1992
SB T5313B/17-0020	4	en	Engine - Rotating Component Service - Life Limit	07/05/1994
SB T5313B/17-0052	2	en	Special Inspection - Centrifugal Compressor Impeller	12/16/1993
SB T5508D-0002	7	en	Rotating Component Service-Life Limit	06/25/1993
SB T5508D-0040		en	Engine-Components - Removal of Time/Cycle Sensitive Impeller (Drawdown)	06/25/1993

Service Instructions
Name	Revision	Lang	Subject	Date
SI 1002		en	Proper Maintenance of Carburetor Air Filters	03/04/1960
SI 1008	C	en	Installation of Thermostatic Oil Cooler Bypass Valve	07/21/2016
SI 1009	AJ	en	Required Time Between Overhaul (TBO) Schedule	07/01/1992
SI 1009	AL	en	Required Time Between Overhaul (TBO) Schedule	05/11/1998
SI 1009	AQ	en	Required Time Between Overhaul (TBO) Schedule	01/12/2001
SI 1009	AR	en	Required Time Between Overhaul (TBO) Schedule	06/22/2004
SI 1009	AS	en	Required Time Between Overhaul (TBO) Schedule	05/25/2006
SI 1009	AT	en	Required Time Between Overhaul (TBO) Schedule	05/09/2008
SI 1009	AU	en	Required Time Between Overhaul (TBO) Schedule	11/18/2009
SI 1009	AV	en	Required Time Between Overhaul (TBO) Schedule	07/08/2013
SI 1009	AW	en	Required Time Between Overhaul (TBO) Schedule	02/24/2014
SI 1009	AY	en	Required Time Between Overhaul (TBO) Schedule	02/26/2016
SI 1009	AZ	en	Required Time Between Overhaul (TBO) Schedule	02/01/2017
SI 1009	BA	en	Required Time Between Overhaul (TBO) Schedule	06/15/2017
SI 1009	BB	en	Required Time Between Overhaul (TBO) Schedule	08/15/2017
SI 1009	BC	en	Required Time Between Overhaul (TBO) Schedule	05/09/2018
SI 1009	BD	en	Required Time Between Overhaul (TBO) Schedule	02/13/2019
SI 1009	BE	en	Required Time Between Overhaul (TBO) Schedule	04/24/2020
SI 1009	L	en	Required Time Between Overhaul (TBO) Schedule	06/01/1968
SI 1011	G	en	Tappets and Lifters	03/02/1979
SI 1011	H	en	Tappets and Lifters	05/23/1997
SI 1011	J	en	Tappets and Lifters	02/23/2012
SI 1011	K	en	Tappets and Lifters	06/27/2013
SI 1011	L	en	Tappets and Lifters	01/21/2015
SI 1011	M	en	Tappets and Lifters	04/10/2018
SI 1011	N	en	Tappets and Lifters	01/07/2019
SI 1012	F, Supp 2	en	Counterweights and Rollers on Engine Models	08/07/2009
SI 1012	G	en	Counterweights and Rollers on Engine Models	08/30/2011
SI 1012	G, Supp 1	en	Counterweights and Rollers on Engine Models	03/06/2012
SI 1012	G, Supp 2	en	Counterweights and Rollers on Engine Models	01/18/2013
SI 1012	H	en	Counterweights and Rollers on Engine Models	01/09/2017
SI 1012	J	en	Counterweights and Rollers on Engine Models	10/20/2017
SI 1012	K	en	Counterweights and Rollers on Engine Models	01/07/2019
SI 1012	L	en	Counterweights and Rollers on Engine Models	04/08/2020
SI 1014	M	en	Lubricating Oil Recommendations	05/22/1995
SI 1014	N	en	Lubricating Oil Recommendations	07/29/2020
SI 1033		en	Replacement of Propeller Shaft Seal Rings	04/28/1961
SI 1037	M	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	07/08/2002
SI 1037	N	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	12/15/2009
SI 1037	P	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	06/11/2014
SI 1037	S	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	01/09/2017
SI 1037	T	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	09/22/2017
SI 1037	U	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	02/14/2018
SI 1037	V	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	02/13/2019
SI 1037	W	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	04/28/2020
SI 1037	Y	en	Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines	08/25/2021
SI 1042	AA	en	Approved Spark Plugs	02/17/2015
SI 1042	AB	en	Approved Spark Plugs	04/27/2016
SI 1042	AC	en	Approved Spark Plugs	01/10/2017
SI 1042	AD	en	Approved Spark Plugs	08/31/2017
SI 1042	AE	en	Approved Spark Plugs	10/02/2017
SI 1042	AF	en	Approved Spark Plugs	04/09/2018
SI 1042	AG	en	Approved Spark Plugs	01/07/2019
SI 1042	AH	en	Approved Spark Plugs	04/08/2020
SI 1042	W	en	Approved Spark Plugs	05/15/2000
SI 1042	X	en	Approved Spark Plugs	07/09/2002
SI 1042	Y	en	Approved Spark Plugs	09/01/2006
SI 1042	Z	en	Approved Spark Plugs	05/08/2009
SI 1043	A	en	Spark Plug Heli-Coil Insert Replacement	09/19/1969
SI 1047	B	en	Inspection and Reconditioning Procedures for Nitride Hardened Steel Cylinders	11/24/1967
SI 1059	C	en	Pre-Lubrication of Parts Before Assembly	05/19/1987
SI 1059	D	en	Pre-Lubrication of Parts Before Assembly	02/25/2011
SI 1059	E	en	Pre-Lubrication of Parts Before Assembly	01/27/2016
SI 1060		en	Push Rod Identification	07/20/1962
SI 1060	J	en	Push Rod Identification	03/10/2006
SI 1060	K	en	Push Rod Identification	06/21/2010
SI 1060	L	en	Push Rod Identification	05/03/2016
SI 1060	M	en	Push Rod Identification	02/01/2017
SI 1060	P	en	Push Rod Identification	08/31/2017
SI 1060	Q	en	Push Rod Identification	09/25/2017
SI 1060	R	en	Push Rod Identification	11/15/2017
SI 1060	S	en	Push Rod Identification	02/14/2018
SI 1060	T	en	Push Rod Identification	01/07/2019
SI 1060	U	en	Push Rod Identification	04/22/2020
SI 1068	A	en	Tappet Clearance	09/01/1978
SI 1068	A, Supp 1	en	Tappet Clearance	03/17/1997
SI 1070	aa	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	01/11/2019
SI 1070	AB	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/08/2020
SI 1070	C	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/23/1971
SI 1070	F	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	01/05/1973
SI 1070	M	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	03/07/2002
SI 1070	M, Supp 1	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	03/21/2002
SI 1070	M, Supp 2	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	09/28/2004
SI 1070	N	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	06/14/2006
SI 1070	P	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/18/2008
SI 1070	Q	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	07/16/2010
SI 1070	R	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/16/2012
SI 1070	S	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/24/2013
SI 1070	T	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	03/30/2016
SI 1070	U	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	01/30/2017
SI 1070	V	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/06/2017
SI 1070	W	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	08/10/2017
SI 1070	Y	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	10/12/2017
SI 1070	Z	en	Specified Fuels for Spark-Ignited Gasoline Aircraft Engine Models	04/04/2018
SI 1080	B	en	Maintenance Items for Special Attention	06/14/2006
SI 1080	C	en	Maintenance Items for Special Attention	06/15/2007
SI 1094	D	en	Fuel Mixture Leaning Procedures	03/25/1994
SI 1098	G	en	Propeller Flange Bushing Location	04/30/2001
SI 1098	H	en	Propeller Flange Bushing Location	03/08/2012
SI 1098	H, Supp 1	en	Propeller Flange Bushing Location	01/18/2013
SI 1098	J	en	Propeller Flange Bushing Location	04/04/2016
SI 1098	K	en	Propeller Flange Bushing Location	01/27/2017
SI 1098	L	en	Propeller Flange Bushing Location	08/24/2017
SI 1098	M	en	Propeller Flange Bushing Location	09/26/2017
SI 1098	N	en	Propeller Flange Bushing Location	02/14/2018
SI 1098	P	en	Propeller Flange Bushing Location	01/11/2019
SI 1098	Q	en	Propeller Flange Bushing Location	04/08/2020
SI 1105	B	en	Periodic Inspection of Generator/Alternator Mounting Brackets	05/05/2006
SI 1110	A	en	Replacement AC Fuel Pumps	03/14/1969
SI 1112	C	en	Repair of Fretted Crankcases	10/25/1968
SI 1112	D	en	Repair of Fretted Crankcases	03/28/1975
SI 1112	E	en	Repair of Fretted Crankcases	10/31/1988
SI 1123	A	en	Installation of Dowels and Rubber O-Ring Seals at Crankcase Thru-Stud Locations	12/01/1972
SI 1123	D	en	Installation of Dowels and Rubber O-Ring Seals at Crankcase Thru-Stud Locations	05/23/1997
SI 1125	C	en	Alternate Crankcase Parting Surface Sealants	08/04/2006
SI 1125	D	en	Alternate Crankcase Parting Surface Sealants	10/17/2008
SI 1129	C	en	Methods of Checking DC Alternator and Generator Belt Tension	03/27/2015
SI 1129	D	en	Methods of Checking DC Alternator and Generator Belt Tension	07/23/2015
SI 1132	B	en	Magneto Drop-Off	06/18/2010
SI 1141	A	en	Replacement of Worn Starter Ring Gears	05/09/2014
SI 1143	B, Supp 4	en	Counterweight Bushing Inspection, Replacement, and Special Tooling Upgrades	08/07/2009
SI 1143	C	en	Counterweight Bushing Inspection, Replacement, and Special Tooling Upgrades	11/10/2011
SI 1148	C	en	Use of Carburetor Heat Control	10/12/2007
SI 1154	F	en	FAA-Approved Starters and Alternators	02/24/1997
SI 1154	H	en	FAA-Approved Starters and Alternators	03/30/2000
SI 1154	J	en	FAA-Approved Starters and Alternators	03/21/2002
SI 1154	K	en	FAA-Approved Starters and Alternators	03/23/2004
SI 1154	K, Supp 1	en	FAA-Approved Starters and Alternators	07/15/2004
SI 1154	L	en	FAA-Approved Starters and Alternators	01/27/2006
SI 1154	M	en	FAA-Approved Starters and Alternators	05/26/2009
SI 1154	N	en	FAA-Approved Starters and Alternators	03/14/2011
SI 1154	P	en	FAA-Approved Starters and Alternators	03/08/2012
SI 1154	R	en	FAA-Approved Starters and Alternators	02/12/2014
SI 1154	S	en	FAA-Approved Starters and Alternators	03/30/2016
SI 1154	T	en	FAA-Approved Starters and Alternators	01/10/2017
SI 1154	U	en	FAA-Approved Starters and Alternators	04/09/2018
SI 1154	V	en	FAA-Approved Starters and Alternators	01/11/2019
SI 1154	W	en	FAA-Approved Starters and Alternators	04/16/2020
SI 1164	A	en	Oil Pump Application	11/25/1991
SI 1164	B	en	Oil Pump Application	04/12/2005
SI 1172	C	en	Adjustable Oil Pressure Relief Valve Installation and Valve Seat Repair or Replacement	01/28/1983
SI 1179	A	en	Crankshaft & Gear Assembly: Inspection & Repair	09/06/1968
SI 1187	C	en	Turbocharger Density Controller Adjustment
SI 1187	J	en	Turbocharger Density Controller Adjustment	05/23/1997
SI 1189		en	Malfunction of Slick Impulse Coupling Magneto	06/06/1968
SI 1191		en	Cylinder Compression	03/31/1972
SI 1191	A	en	Cylinder Compression	09/28/1998
SI 1192	A	en	Valve Spring Compressor No. ST266	09/29/2010
SI 1204	C	en	Exhaust Flange Gaskets	07/24/2009
SI 1204	D	en	Exhaust Flange Gaskets	08/26/2010
SI 1209	B	en	Crankshaft Flange Bolt Replacement	05/09/1980
SI 1210	B	en	Pinion Cage Attaching Nut Replacement	03/27/1981
SI 1221		en	Dry Air Pump Drive Oil Seal Replacement	08/29/1969
SI 1237	A	en	Prestolite Service Bulletins No. ASM-3 and ASM-4. Aircraft Charging System Service Precautions	05/07/1971
SI 1238	B	en	Assembly and Torque Procedures for V-Band Couplings	01/06/2010
SI 1241	C	en	Pre-Oiling Engine Prior to Initial Start	04/18/1997
SI 1246	B	en	Engine Conversion For Use of 100/130 or 100LL Grade Fuel	12/15/2009
SI 1256	F	en	Valve Guides For Service Use	04/05/2012
SI 1257	G	en	Horsepower, Manifold Pressure and RPM Values	05/16/2008
SI 1261		en	Sealing Oil Supply Ports	10/13/1972
SI 1267	B	en	Piston Pin Plug Usage	03/15/1985
SI 1267	C	en	Piston Pin Plug Usage	02/26/1999
SI 1267	D	en	Piston Pin Plug Usage	08/28/2009
SI 1272		en	Hardened Oil Pump Impeller	05/18/1973
SI 1275	C	en	Cleaning Fuel Injector Nozzles	09/23/2008
SI 1278		en	Starter Drive Lubrication	03/23/1973
SI 1279	C	en	Oil Sump Baffle Replacement	05/08/2012
SI 1279	D	en	Oil Sump Baffle Replacement	05/15/2019
SI 1280	D	en	Rotator Type Intake Valves	07/20/2021
SI 1285	C	en	Non-Destructive Testing of Lycoming Engine Parts	07/20/2007
SI 1285	D	en	Non-Destructive Testing of Lycoming Engine Parts	02/23/2012
SI 1285	D, Supp 1	en	Non-Destructive Testing of Lycoming Engine Parts	01/28/2014
SI 1285	E	en	Non-Destructive Testing of Lycoming Engine Parts	01/30/2015
SI 1285	F	en	Non-Destructive Testing of Lycoming Engine Parts	07/18/2017
SI 1290	F	en	Repair of Oil Leakage at Crankcase Thru-Stud Locations; Assembled and Unassembled Engines	07/24/2009
SI 1291		en	Ignition System for High Altitude Operation	11/02/1973
SI 1299	B	en	Magneto Drive Gear and Cushion Modification	09/24/2010
SI 1304	J	en	Engine Nameplate Replacement	11/12/1999
SI 1308	E	en	Pressurized Magneto Pressure Test	02/02/2007
SI 1308	E, Supp 1	en	Pressurized Magneto Pressure Test	03/16/2007
SI 1316	A	en	Repair of Oil Cooler By-Pass Valve Seat	04/25/1986
SI 1320		en	Tightening Procedure for Exhaust Manifold Components	03/07/1975
SI 1324	B	en	Crankshaft Oil Seals	10/30/2006
SI 1324	C	en	Crankshaft Oil Seals	05/26/2009
SI 1324	D	en	Crankshaft Oil Seals	01/25/2023
SI 1325		en	Timing Change for 10-360 Series Engines	10/03/1975
SI 1340	A	en	Piston Pin Identification	05/25/2006
SI 1341		en	Oil Pump Idler Shaft Lubrication	07/30/1976
SI 1343	B	en	Set Screw for Propeller Governor Idler Shaft	06/15/2007
SI 1343	C	en	Set Screw for Propeller Governor Idler Shaft	03/10/2016
SI 1369		en	Vacuum Pump Pad Oil Supply Port	10/06/1978
SI 1374	B	en	Slick Magnetos	10/16/1991
SI 1380		en	Engine Mounting Bracket Attachment Nuts or Bolts	06/22/1979
SI 1388	C	en	Trouble Shooting of the O-235 Series Engines	09/25/1981
SI 1391		en	Exhaust Manifold Tube Alignment	10/05/1979
SI 1397	A	en	Overflow Oil from Breather Fitting of Inverted Oil System	06/01/2016
SI 1406	B	en	Crankcase Parts for Use with Large-Diameter Hydraulic Lifters	08/26/1983
SI 1406	C	en	Crankcase Parts for Use with Large-Diameter Hydraulic Lifters	08/02/2011
SI 1406	D	en	Crankcase Parts for Use with Large-Diameter Hydraulic Lifters	10/04/2012
SI 1406	E	en	Crankcase Parts for Use with Large-Diameter Hydraulic Lifters	09/09/2014
SI 1408	B	en	Engine Mount Bracket Replacement	03/19/2013
SI 1408	C	en	Engine Mount Bracket Replacement	06/17/2016
SI 1409	A, Supp 1	en	Lycoming Engines P/N LW-16702, Oil Additive	11/12/1993
SI 1409	C	en	Lycoming Engines P/N LW-16702, Oil Additive	02/20/2009
SI 1414	B	en	Bendix Service Bulletin No. RS77, Rev. 2	02/27/2012
SI 1415	A	en	New Turbocharger Mounting Hardware	03/21/2019
SI 1420	A	en	Fuel Pump Drive Spline Lubrication	02/25/2011
SI 1424	A	en	Installation Procedure for P/N 15B26066 Hydraulic Tappet/Plunger Assemblies	12/15/2009
SI 1425	A	en	Suggested Maintenance Procedures to Reduce the Possibility of Valve Sticking	01/19/1988
SI 1427	B	en	Lycoming Reciprocating Engine Break-In and Oil Consumption	02/08/1993
SI 1427	C	en	Lycoming Reciprocating Engine Break-In and Oil Consumption	12/29/2010
SI 1435		en	Conversion from Constant Speed to Fixed Pitch Propeller and Vice Versa. Propeller Governor Oil Line Nut and Elbow	04/25/1986
SI 1436	A	en	Adapter Kit for Magneto Isolation Drive	09/29/2010
SI 1437		en	Engine Timing Marks	08/15/1986
SI 1438	A	en	Propeller Governor Pad Plate P/N LW-12347	12/09/2005
SI 1442	A	en	Improved Oil Filter Bypass Valve	03/28/2011
SI 1443	A	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	09/15/1991
SI 1443	E	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	05/19/2000
SI 1443	F	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	08/04/2006
SI 1443	G	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	12/15/2009
SI 1443	H	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	02/07/2012
SI 1443	H, Supp 1	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	10/12/2012
SI 1443	J	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	02/17/2015
SI 1443	K	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	10/30/2015
SI 1443	L	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	04/27/2016
SI 1443	M	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	01/10/2017
SI 1443	N	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	08/09/2017
SI 1443	P	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	10/12/2017
SI 1443	Q	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	04/09/2018
SI 1443	R	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	04/16/2020
SI 1443	S	en	Approved Slick Magnetos and Lycoming Electronic Ignition System (EIS) on Lycoming Engines	12/08/2022
SI 1446		en	Possible Ruptured Pressure Regulator Diaphragm in a Fuel Pump	08/09/1989
SI 1449		en	Installation of Rotormaster Turbocharger (46A21184)	03/23/1990
SI 1453		en	Procedure to Replace Oil Filter Converter Plate Gasket	05/09/1991
SI 1453	A	en	Procedure to Replace Oil Filter Converter Plate Gasket	06/30/2003
SI 1453	B	en	Procedure to Replace Oil Filter Converter Plate Gasket	09/24/2010
SI 1454	A	en	Rocker Arm Assembly Replacement Part	02/25/2011
SI 1454	A, Supp 1	en	Rocker Arm Assembly Replacement Part	03/19/2013
SI 1457	A	en	Optional Remote-Mounted Oil Filter Kits	02/01/2012
SI 1458	B	en	Connecting Rod Bolts (Identification and Installation)	03/06/2001
SI 1458	C	en	Connecting Rod Bolts (Identification and Installation)	02/03/2006
SI 1458	D	en	Connecting Rod Bolts (Identification and Installation)	04/20/2007
SI 1458	E	en	Connecting Rod Bolts (Identification and Installation)	07/24/2008
SI 1458	F	en	Connecting Rod Bolts (Identification and Installation)	03/06/2012
SI 1458	G	en	Connecting Rod Bolts (Identification and Installation)	11/10/2015
SI 1462	A	en	Propeller Oil Control Leak Test Procedure (With Propeller Installed on Engine)	07/10/2003
SI 1472		en	Removal of Preservative Oil From Engine	08/12/1994
SI 1480		en	Installation of Steel Push Rods	03/17/1997
SI 1481		en	Factory Engine Preservation	04/18/1997
SI 1481	A	en	Factory Engine Preservation	02/23/2007
SI 1481	B	en	Factory Engine Preservation	02/08/2008
SI 1483	A	en	Valve Leak Check with Engine Cylinder Removed (Field Procedure)	12/21/2010
SI 1484	A	en	Installation Torque for Fuel Metering Device, Carburetor, Fuel Injector Servo or "AN" Fuel Pump Hold Down Nuts	09/21/2007
SI 1484	B	en	Installation Torque for Fuel Metering Device, Carburetor, Fuel Injector Servo or "AN" Fuel Pump Hold Down Nuts	11/18/2010
SI 1484	C	en	Installation Torque for Fuel Metering Device, Carburetor, Fuel Injector Servo or "AN" Fuel Pump Hold Down Nuts	03/29/2011
SI 1485	A	en	Exhaust Valve and Guide Identification Procedure	07/02/2003
SI 1486		en	Fuel Injector and Flow Divider Replacement	10/28/1998
SI 1489	A	en	Fuel Manifold Spring Change	06/11/2002
SI 1489	B	en	Fuel Manifold Spring Change	10/27/2003
SI 1489	C	en	Fuel Manifold Spring Change	03/09/2011
SI 1491		en	Fuel Injector Check	01/21/1999
SI 1492	A	en	Piston Pin Plug Wear Inspection	12/30/1998
SI 1492	B	en	Piston Pin Plug Wear Inspection	02/26/1999
SI 1492	C	en	Piston Pin Plug Wear Inspection	07/14/2000
SI 1492	D	en	Piston Pin Plug Wear Inspection	03/20/2009
SI 1497	A	en	Engine Procedures for Flight Training Operations	04/12/2011
SI 1498	A	en	Recommended Engine Procedures for Purge of Vapor During Ground Operations	04/13/2011
SI 1498	B	en	Recommended Engine Procedures for Purge of Vapor During Ground Operations	01/07/2019
SI 1500		en	Counterweight Roller Change for Robinson Helicopter	01/11/2001
SI 1502	A	en	Installation of Inverter Flow Divider	12/19/2000
SI 1503		en	Accessory Drive Gear and Shaft Dowel Replacement	12/20/2000
SI 1504		en	Cylinder Assembly Replacement on O-235 Engines Operated Under DGAC Authority	01/26/2001
SI 1505		en	Cold Weather Starting	07/01/2002
SI 1506		en	Replacement of Impulse Coupling Magnetos on Four-Cylinder Engines	04/20/2001
SI 1506	A	en	Replacement of Impulse Coupling Magnetos on Four-Cylinder Engines	06/28/2016
SI 1508		en	Dual Magneto Attachment	04/17/2002
SI 1508	A	en	Dual Magneto Attachment	08/15/2003
SI 1508	B	en	Dual Magneto Attachment	12/19/2007
SI 1508	C	en	Dual Magneto Attachment	02/10/2011
SI 1509		en	Replacement of All P/N STD-1409 Nuts with P/N STD-2249 Nuts	04/25/2003
SI 1510		en	Adapter Kit for Magneto Isolation Drive	04/30/2003
SI 1510	A	en	Adapter Kit for Magneto Isolation Drive	04/22/2004
SI 1511	A	en	Inspection of "PID" Stamped Crankshafts	05/26/2005
SI 1512		en	Main and Connecting Rod Bearing Upgrade	09/23/2004
SI 1512	Supp 1	en	Main and Connecting Rod Bearing Upgrade	08/28/2009
SI 1513		en	Reprint of Lamar Service Information Letter No. LSI-009	09/23/2004
SI 1514		en	Roller Tappets Part Information Update	03/10/2006
SI 1514	A	en	Roller Tappets Part Information Update	07/18/2008
SI 1514	B	en	Roller Tappets Part Information Update	02/23/2011
SI 1514	C	en	Roller Tappets Part Information Update	10/13/2016
SI 1514	D	en	Roller Tappets Part Information Update	02/05/2018
SI 1517		en	Timing Change for TIO-540-AK1A Series Engines	10/27/2006
SI 1518		en	Reprint of Precision Service Information Letter No. SIL RS-84	03/14/2008
SI 1519		en	Reprint of Precision Service Information Letter No. SIL RS-87 Revision 1	05/30/2008
SI 1519	A	en	Reprint of Precision Service Information Letter No. SIL RS-87 Revision 1	09/19/2008
SI 1520		en	Reprint of Precision Service Information Letter No. SIL RS88	08/22/2008
SI 1521		en	Reprint of Precision Service Information Letter No. SIL RS-35 Revision 1	11/19/2008
SI 1522		en	Reprint of Precision Service Information Letter No. SIL RS-62 Revision 2	11/19/2008
SI 1523		en	Lycoming Engines Carburetor Manufacturer Cross-References	06/16/2009
SI 1523	A	en	Lycoming Engines Carburetor Manufacturer Cross-References	11/20/2009
SI 1523	B	en	Lycoming Engines Carburetor Manufacturer Cross-References	04/15/2013
SI 1523	C	en	Lycoming Engines Carburetor Manufacturer Cross-References	11/15/2013
SI 1523	D	en	Lycoming Engines Carburetor Manufacturer Cross-References	01/06/2015
SI 1523	E	en	Lycoming Engines Carburetor Manufacturer Cross-References	09/16/2015
SI 1523	F	en	Lycoming Engines Carburetor Manufacturer Cross-References	12/14/2015
SI 1523	G	en	Lycoming Engines Carburetor Manufacturer Cross-References	03/16/2016
SI 1524		en	Alternator Bracket Kit for 130A Alternators	02/23/2009
SI 1525		en	Reprint of Precision Service Information Letter No. SIL RS-92	01/16/2009
SI 1526		en	New Piston Part Numbers	08/25/2010
SI 1526	A	en	New Piston Part Numbers	09/24/2010
SI 1526	B	en	New Piston Part Numbers	11/04/2011
SI 1526	C	en	New Piston Part Numbers	01/18/2012
SI 1526	D	en	New Piston Part Numbers	03/29/2012
SI 1526	E	en	New Piston Part Numbers	05/18/2012
SI 1526	F	en	New Piston Part Numbers	05/05/2015
SI 1526	G	en	New Piston Part Numbers	07/24/2015
SI 1528		en	Aircraft Engine Starter Recommendations	12/15/2009
SI 1529		en	Hydraulic Lifter and Tappet Body Part Numbers	11/20/2009
SI 1529	A	en	Hydraulic Lifter and Tappet Body Part Numbers	06/30/2010
SI 1529	B	en	Hydraulic Lifter and Tappet Body Part Numbers	02/23/2012
SI 1529	C	en	Hydraulic Lifter and Tappet Body Part Numbers	07/16/2012
SI 1530		en	Engine Inspection in Particulate-Laden Environments (Volcanic Ash, Sand, Dust, Airborne Debris)	02/04/2011
SI 1531		en	Alternator Bracket for Engines Equipped with Kelly Aerospace E-Drive Starters	06/11/2010
SI 1532		en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	05/25/2012
SI 1532	A	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	02/06/2013
SI 1532	B	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	04/08/2013
SI 1532	C	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	03/05/2014
SI 1532	D	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	09/09/2014
SI 1532	E	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	11/26/2014
SI 1532	F	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	04/11/2016
SI 1532	G	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	01/10/2017
SI 1532	H	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	08/14/2017
SI 1532	J	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	10/12/2017
SI 1532	K	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	04/16/2018
SI 1532	L	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	04/16/2020
SI 1532	M	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	11/19/2021
SI 1532	N	en	Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines	12/13/2023
SI 1533		en	Approved Rotary Vane Fuel Pumps	09/24/2010
SI 1533	A	en	Approved Rotary Vane Fuel Pumps	05/05/2015
SI 1533	B	en	Approved Rotary Vane Fuel Pumps	07/29/2015
SI 1533	C	en	Approved Rotary Vane Fuel Pumps	09/03/2015
SI 1533	D	en	Approved Rotary Vane Fuel Pumps	01/11/2019
SI 1533	E	en	Approved Rotary Vane Fuel Pumps	04/07/2022
SI 1534		en	Service Recommendations for Long-Term Storage of Engines that Use Automotive Fuel	01/27/2011
SI 1535		en	Counterweight and Roller Removal, Inspection, and Installation	10/31/2011
SI 1535	Supp 1	en	Counterweight and Roller Removal, Inspection, and Installation	12/13/2011
SI 1539		en	Fuel Manifold Spring Change	02/04/2011
SI 1543		en	Notification of Approved Tappet P/N 15B26262	02/23/2012
SI 1545		en	Expanded Clearance in Crankcase Nose	10/02/2012
SI 1546		en	Specific Requirements for Installation and Removal of Electrical Lead on Hartzell Engine Technologies, LLC (Previously Kelly Aerospace) Starters	10/04/2012
SI 1549		en	Notification of Approved Fuel Pump Plunger P/N 23D26777	06/27/2012
SI 1553		en	Additional Cylinder Fin Stabilizer	03/26/2013
SI 1554		en	Zip Strap Replacement	05/07/2014
SI 1558		en	New Piston Ring Part Numbers	03/21/2014
SI 1559		en	Adjusting Fuel Pressure on AN-Drive Type Fuel Pumps	11/26/2014
SI 1560		en	Propeller Governor Drive Set Screw Inspection	03/10/2016
SI 1562		en	Turbocharged Exhaust System Installation	06/05/2014
SI 1565	A	en	Replacement Thermostatic Oil Cooler Bypass Valves	05/04/2017
SI 1566		en	Lycoming Engines Approves the Use of Safety Cable	03/10/2016
SI 1569	A	en	Installation, Operation, and Maintenance of Lycoming Electronic Ignition System (EIS)	09/02/2020
SI 1569	B	en	Installation, Operation, and Maintenance of Lycoming Electronic Ignition System (EIS)	04/21/2021
SI 1570		en	Alternate Oil Sump Fitting Configuration for Aerobatic Inverted Oil System	12/12/2017
SI 1570	A	en	Alternate Oil Sump Fitting Configuration for Aerobatic Inverted Oil System	08/03/2018
SI 1571		en	Lockplate Installation for Induction Housing on TIO-540-AJ1A and IO-540-AC1A5	08/23/2018
SI 1572		en	Plug Replacement of Vapor Return Fitting on Piper Installation of IO-360-B4A	08/03/2018
SI 1573		en	Lycoming TEO-540 Engine Series Approved Engine Configurations	01/11/2019
SI 1573	A	en	Lycoming TEO-540 Engine Series Approved Engine Configurations	05/23/2019
SI 1573	B	en	Lycoming TEO-540 Engine Series Approved Engine Configurations	02/07/2020
SI 1573	C	en	Lycoming TEO-540 Engine Series Approved Engine Configurations	06/14/2021
SI 1573	D	en	Lycoming TEO-540 Engine Series Approved Engine Configurations	07/30/2021
SI 1573	E	en	Lycoming TEO-540 Engine Series Approved Engine Configurations	11/22/2021
SI 1575		en	New Connecting Rod Bushing	03/11/2020
SI 1577		en	Intake Valve In-Service Data	11/10/2020
SI 1577	A	en	Intake Valve In-Service Data	01/25/2023
SI 1579		en	Exhaust System Replacement Components	11/20/2020
SI 1582		en	Fuel Injector Replacement	06/14/2021
SI 1582	A	en	Fuel Injector Replacement	11/22/2021
SI 1583		en	Front Expansion Plug Replacement	05/18/2022
SI 1585		en	Oil Cooler Bypass Valve Assembly Replacement	11/19/2021
SI 1585	A	en	Oil Cooler Bypass Valve Assembly Replacement	12/01/2023
SI 1586		en	Oil Filter Base Bypass Spring Replacement	12/02/2021
SI 1587		en	Reprint of AVStar Service Information Letter No. AFS-SIL-03	02/03/2022
SI 1588		en	Rocker Box Cover Screws Torque Values and Torque Sequence	02/14/2024
SI 1589		en	Exhaust Bypass Valve Assembly Replacement	12/01/2023
SI 1592		en	Set up and Adjustment of Fuel Control. Installation of the Throttle Position Sensor (TPS) and Mixture Position Sensor (MPS)	10/03/2024
SI 1593		en	Incorrectly Marked Alternator Belts	05/12/2025

Service Letters
Name	Revision	Lang	Subject	Date
SL 047		en	Rear Bearing Support Housing Clogging Inspection	10/10/1986
SL L114	AG	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	11/04/1994
SL L114	AK	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	08/25/2000
SL L114	AL	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/27/2003
SL L114	AM	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	01/06/2005
SL L114	AN	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/03/2006
SL L114	AP	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	07/20/2007
SL L114	AQ	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	08/22/2008
SL L114	AR	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/27/2009
SL L114	AR, Supp 1	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	07/31/2009
SL L114	AS	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	03/26/2010
SL L114	AT	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/08/2011
SL L114	AU	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/23/2012
SL L114	AU, Supp 1	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	04/19/2012
SL L114	AU, Supp 2	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	08/07/2012
SL L114	AV	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	03/19/2013
SL L114	AV, Supp 1	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	09/30/2013
SL L114	AW	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	01/23/2014
SL L114	AY	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	09/24/2015
SL L114	AZ	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	12/17/2015
SL L114	BA	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	06/29/2016
SL L114	BC	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/16/2017
SL L114	BD	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	09/01/2017
SL L114	BE	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	09/27/2017
SL L114	BF	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	04/26/2018
SL L114	BG	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	02/13/2019
SL L114	BH	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	04/13/2020
SL L114	BJ	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	10/05/2021
SL L114	BK	en	Reciprocating Engine and Accessory Maintenance Publications (RE: Domestic Publications Order Form and Export Publications Order Form)	12/14/2023
SL L126		en	Conversion to Low Compression Engine	01/29/1960
SL L162	B	en	Heli-Coil Service Repair Kit	01/29/1982
SL L163	C	en	Recommendations Regarding Accidental Engine Stoppage, Propeller Strike, Loss of Propeller Blade or Tip	05/20/1991
SL L171		en	General Aspects of Spectrometric Oil Analysis	11/26/1971
SL L173	C	en	Slick Aircraft Products Service Bulletin No. SB2-80C	03/10/2006
SL L180		en	Engine Preservation for Active and Stored Aircraft	01/04/1974
SL L180	B	en	Engine Preservation for Active and Stored Aircraft	11/13/2001
SL L185	B	en	The Use of Higher Octane Aviation Fuel for Engines Rated for 80/87 Octane Fuel	01/19/1988
SL L192	B	en	Spark Plug Fouling	01/19/1988
SL L197	A	en	Recommendations to Avoid Valve Sticking	01/19/1988
SL L199		en	Recommendations Regarding USE OF FUEL	01/28/1983
SL L213	A	en	Time Between Overhaul (TBO) Extension Kit	04/10/1987
SL L220	C	en	Wide Deck Cylinder Configuration on Lycoming Engines	08/02/2011
SL L221	B	en	Warranty Repair of Precision Airmotive Corporation Fuel Control Products	06/21/2001
SL L221	C	en	Warranty Repair of Precision Airmotive Corporation Fuel Control Products	06/15/2007
SL L230	B	en	Lycoming Publications Available on Microfiche	08/04/2006
SL L234	A	en	Tool Rental Program	07/10/2002
SL L234	B	en	Tool Rental Program	06/15/2007
SL L240		en	Part Numbers Identified by Lycoming with -70 or -85 Suffix	05/15/2003
SL L240	A	en	Part Numbers Identified by Lycoming with -70 or -85 Suffix	05/27/2009
SL L242		en	Improved Lower Idle Valve in Fuel Injectors	01/06/2005
SL L244		en	Revision to Appendix 1 in Service Bulletin No. 569	03/27/2006
SL L245		en	Special Service Publication No. SSP567, "Camshaft Regrinding"	11/02/2007
SL L247		en	Shelf Life Requirements	05/21/2010
SL L247	A	en	Shelf Life Requirements	05/15/2012
SL L247	A, Supp 1	en	Shelf Life Requirements	08/31/2012
SL L247	B	en	Shelf Life Requirements	11/18/2013
SL L247	C	en	Shelf Life Requirements	02/28/2014
SL L247	D	en	Shelf Life Requirements	07/27/2015
SL L247	E	en	Shelf Life Requirements	03/02/2016
SL L247	F	en	Shelf Life Requirements	07/20/2016
SL L247	G	en	Shelf Life Requirements	11/23/2016
SL L247	H	en	Shelf Life Requirements	07/24/2017
SL L247	J	en	Shelf Life Requirements	08/23/2018
SL L248		en	O-235 Crankcase Design Upgrade	01/14/2011
SL L249		en	Interim Alternative to Address the Discontinuation of Teledyne Dual Magnetos	10/06/2010
SL L250		en	Lycoming Engines Exchange Engine Core Policy	11/23/2010
SL L250	A	en	Lycoming Engines Exchange Engine Core Policy	07/29/2011
SL L251		en	Connecting Rod Bolt Marking	11/23/2010
SL L253		en	Warranty Repair of AvStar Fuel Systems, Inc. Fuel Control Products	01/22/2013
SL L253	A	en	Warranty Repair of AvStar Fuel Systems, Inc. Fuel Control Products	08/27/2013
SL L253	B	en	Warranty Repair of AvStar Fuel Systems, Inc. Fuel Control Products	02/28/2014
SL L253	C	en	Warranty Repair of AvStar Fuel Systems, Inc. Fuel Control Products	04/16/2018
SL L254		en	Lycoming Model Designation for All Carburetors	04/15/2013
SL L255		en	Approved Diaphragm-Type Fuel Pumps	04/26/2013
SL L255	A	en	Approved Diaphragm-Type Fuel Pumps	05/03/2016
SL L258		en	Part Number Supersedure for External Retaining Ring	08/27/2013
SL L259		en	Product Improvements on Lycoming Carburetor P/N 61C26051	01/23/2014
SL L261		en	Alternate Carburetor	04/23/2014
SL L261	A	en	Alternate Carburetor	11/11/2015
SL L262		en	New Piston Ring Part Numbers	12/31/2014
SL L263		en	Discolored Paint on Cylinder	03/11/2015
SL L264		en	Engine Start Problems Due to Drift in Magneto-to-Engine Timing. Reprint of Champion Slick Magneto Service Letter 4300/6300-74-20-001, dated February 18, 2015	03/17/2015
SL L264	A	en	Engine Start Problems Due to Drift in Magneto-to-Engine Timing. Reprint of Champion Slick Magneto Service Letter 4300/6300-74-20-001, dated February 18, 2015	01/27/2016
SL L267		en	Warranty and Owner Registration via Lycoming Engines Website	02/16/2017
SL L267	A	en	Warranty and Owner Registration via Lycoming Engines Website	03/21/2024
SL L270		en	Extended Maintenance Intervals for Spark-Ignited Engines Operated on Unleaded Fuels	04/05/2017
SL L271		en	How to Access Lycoming Digital Technical Publications	02/16/2017
SL L272		en	Release of New Silicone Rocker Cover Gaskets	07/17/2017
SL L272	A	en	Release of New Silicone Rocker Cover Gaskets	11/21/2017
SL L272	B	en	Release of New Silicone Rocker Cover Gaskets	02/14/2024
SL L273		en	Service Bulletin No. 632 Customer Care Program	01/05/2018
SL L275		en	Warranty Procedure for Exhaust System Replacement Referenced in the Most Current Revision of SB627	04/10/2018
SL L275	A	en	Warranty Procedure for Exhaust System Replacement Referenced in the Most Current Revision of SB627	05/17/2018
SL L277		en	Hartzell Engine Technologies and Lycoming Engines Alternator Distribution Agreement	12/17/2019
SL L278		en	Lycoming Engines Product Support Hours	07/12/2019
SL L279		en	Lycoming Model Designation for Fuel Injectors	10/10/2019
SL L279	A	en	Lycoming Model Designation for Fuel Injectors	12/28/2023
SL L282		en	Australian Fuel Testing	12/11/2020
SL L283		en	Alternate Ignition System	02/19/2021
SL L284		en	Blemish on Cylinder Barrel	03/17/2021
SL L285		en	Change in Cylinder Configuration for O-235-C, -E, and -H Series Engines	08/25/2021
SL L287		en	Increased Fuel Economy and Improved Manifold Pressure Stability	08/12/2021
SL L288		en	Alternate Bolt Locking of Wastegate Solenoid Valve	12/16/2021
SL L289		en	Valve Spring Part Numbers	03/02/2022
SL L293		en	Air Temperature Sensor P/N 60C28409	11/09/2023
SL L296		en	Electronic Ignition System (EIS) Kits Discontinued	06/13/2025

Special Advisories
Name	Lang	Subject	Date
SA 59-800	en	Connecting Rod Bearing Replacement on TIO-540-AE2A Model Engines	08/31/2000
SA 66-801	en	Turbocharger Mounting Bracket Bolt Inspection/Replacement	08/17/2001
SA 94-508	en	Reprint of Unison Industries Mandatory Service Bulletin Nos. SB2-08 and SB3-08	05/15/2008
SA 95-508	en	Reprint of Unison Industries Mandatory Service Bulletin No. SB308	05/21/2008
SA 123-1013	en	Low RPM Engine Surge	11/06/2013
SA 143	en	Mandatory AVStar Billet-Type Carburetor P/N 61C26127	12/18/2014
SA 203	en	Hartzell Engine Tech (HET) Service Bulletin (SB) No. 203	09/14/2023

User Manuals
Name	Revision	Lang	Subject	Date
UM SSP-122		en	Field Service Tool & Troubleshooting: TEO-540 Series	07/31/2022

Miscellaneous
Name	Revision	Lang	Subject	Date
Customer Letter		en	Replacement of Certain Crankshafts on Engines	11/30/2005
HPC		en	Handbook of Instructions with Parts Catalog: O-145 and GO-145	07/31/1945
Key, Part 1		en	A Compilation of Key Maintenance and Performance Articles Taken from the Former Lycoming "Flyer" Newsletter
Key, Part 2		en	A Compilation of Key Maintenance and Performance Articles Taken from the Former Lycoming "Flyer" Newsletter
Key, Part 3		en	A Compilation of Key Maintenance and Performance Articles Taken from the Former Lycoming "Flyer" Newsletter
Key, Part 4		en	A Compilation of Key Maintenance and Performance Articles Taken from the Former Lycoming "Flyer" Newsletter
Key, Part 5		en	A Compilation of Key Maintenance and Performance Articles Taken from the Former Lycoming "Flyer" Newsletter
N/A		en	Some Tips on O-235 Engine
N/A		en	Some Tips on O-235 Engine
ORM 60297-29		en	Operation Reference Manual: IO-390 Series
SSP-108		en	Certificated Aircraft Engines	11/30/2008
SSP-110		en	Certificated Aircraft Engines	05/31/2010
SSP-110	1	en	Certificated Aircraft Engines	11/30/2013
SSP-110	2	en	Certificated Aircraft Engines	04/30/2020
SSP-122	1	en	Field Service Tool User Manual & Troubleshooting Guide	08/31/2023
SSP-124		en	Operating Recommendations for TEO-540-C1A Engine in Tecnam P2012 Traveller	02/29/2024
SSP-384		en	Special Servie Tools	12/31/1984
SSP-384, 2nd Ed		en	Special Servie Tools	02/28/2010
SSP-400		en	Operating Recommendations for TIO-540-AE2A Engine in New Piper Aircraft Malibu Mirage
SSP-400	1	en	Operating Recommendations for TIO-540-AE2A Engine in New Piper Aircraft Malibu Mirage
SSP-400	2	en	Operating Recommendations for TIO-540-AE2A Engine in New Piper Aircraft Malibu Mirage	12/31/2008
SSP-475		en	Reciprocating Engine Troubleshooting Guide	11/30/2005
SSP-500		en	Maintenance Procedure for the Inspection of Oil Filter and Suction Screen
SSP-700	A	en	"Experts" Are Everywhere to Help You
SSP-875	1	en	Labor Allowance Guidebook - Reciprocating Aircraft Engines	04/30/2000
SSP-875	2	en	Labor Allowance Guidebook - Reciprocating Aircraft Engines	01/31/2024
SSP-885	1	en	Engine Mounted Oil Filter Kits and Replacement Filters	01/31/1988
SSP-885	2	en	Engine Mounted Oil Filter Kits and Replacement Filters
SSP-1776	3	en	Service Table of Limits and Torque Value Recommendations	01/31/2017
SSP-1776	4	en	Service Table of Limits and Torque Value Recommendations	04/10/2018
SSP-1776	5	en	Service Table of Limits and Torque Value Recommendations	04/13/2020
Volcanic Ash		en	General Operating and Maintenance Recommendations for Lycoming Engines in Environments Laden with Volcanic Ash

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Service Information: Textron Lycoming

Alternative Names: (Avco Lycoming, Lycoming Engines)

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