Service Information: Helicopter Technology

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Alternative Methods of Compliance • Maintenance Manuals • Memos • Miscellaneous • Publication Indexes • Service Bulletins • Service Notices

Alternative Methods of Compliance
Name	Lang	Subject	Date
AMOC 1996-10-09a	en	Removal Inspection and Removal Requirements of Paragraphs (a) and (b) of AD 96-10-09 for Helicopters Modified by Helicopter Technology (HTC) STC SR09074RC	10/10/1996
AMOC 1996-10-09b	en	Removal Inspection and Removal Requirements of Paragraphs (a) and (b) of AD 96-10-09 for Helicopters Modified by Helicopter Technology (HTC) STC SR09184RC	3/17/1998
AMOC 2003-08-51	en	Service Life Limit of all Tail Rotor Blades Affected by AD 2003-08-51 to be Increased from 400 Hours Time in Service to their Previous Life Limit	6/13/2003

Maintenance Manuals
Name	Revision	Lang	Subject	Date
MM HTCM-001	G	en	Part Number 500P2100 All Variants, 500P2300 All Variants, 369D21120 All Variants, 369D21121 All Variants, and 369D21123 All Variants Main Rotor Blades (Installation and Maintenance)	1/11/2008
MM HTCM-001	H	en	Part Number 500P2100 All Variants, 500P2300 All Variants, 369D21120 All Variants, 369D21121 All Variants, and 369D21123 All Variants Main Rotor Blades (Installation and Maintenance)	2/12/2009
MM HTCM-001	I	en	Part Number 500P2100 All Variants, 500P2300 All Variants, 369D21120 All Variants, 369D21121 All Variants, and 369D21123 All Variants Main Rotor Blades (Installation and Maintenance)	12/2/2015
MM HTCM-002	C	en	Part Numbers: 500P3100-101, -103, -105, -301, -303, and -305; 500P3300-501, -503, and -505; 500P3500-701, -703, and -705; 369D21640-501, -503, -505, and -507; 369D21641-501, -503, -505, and -507; 369D21642-501, -503, -505, and -507; and 369D21643-501, -503, -505, and -507 Tail Rotor Blades (Installation and Maintenance)	11/22/2004
MM HTCM-006	B	en	Part Number 204P2100-101 UH-1H Main Rotor Blade	4/10/2015
MM HTCM-006	C	en	Part Number 204P2100-101 UH-1H Main Rotor Blade	5/12/2015

Memos
Name	Lang	Subject	Date
Memo 03/30/2016	en	Replacement Balance Weights and Weight Retention Screws for HTC Tail Rotor Blade P/Ns 500P3100 All Variants, 500P3300 All Variants and 500P3500 All Variants	3/30/2016
Memo 04/23/2009a	en	Interchangeability of Main Rotor Blades	4/23/2009
Memo 04/23/2009b	en	Interchangeability of Main Rotor Blades	4/23/2009
Memo 04/25/2007	en	Replacement Pitch (Feathering) Bearings for HTC Tail Rotor Blade	4/25/2007
Memo 05/15/2003a	en	P/N 500P2100-101 and -103 Blade Assembly, Main Rotor are Fully Interchangeable in Any Combination with MD Helicopters Main Rotor Blade P/N 369D21100-517	5/15/2003
Memo 05/15/2003b	en	P/N 500P2300-501 and -503 Blade Assembly, Main Rotor are Fully Interchangeable in Any Combination with MD Helicopters Main Rotor Blade P/N 369D21102-523	5/15/2003
Memo 07/14/2021	en	Replacement Pitch (Feathering) Bearings for HTC Tail Rotor Blade Part Number	7/14/2021

Publication Indexes
Name	Revision	Lang	Date
MDL-204-2100-01	B	en	7/30/2015
MDL-204-2100-01	C	en	1/20/2017
MDL-204-2100-01	D	en	6/19/2020
MDL-2100-01	U	en	2/12/2009
MDL-2100-01	V	en	11/4/2011
MDL-2100-01	X	en	12/2/2015
MDL-2300-01	P	en	2/12/2009
MDL-2300-01	Q	en	11/4/2011
MDL-2300-01	S	en	12/2/2015
MDL-3100-01	M	en	11/1/2005
MDL-3300-01	F	en	11/1/2005
MDL-3500-01	F	en	11/1/2005

Service Bulletins
Name	Revision	Lang	Subject	Date
SB 2100-2	2	en	Mandatory Inspection of Main Rotor Blade	11/14/2000
SB 2100-3	3	en	Mandatory Main Rotor Blade Torque Event (TE) Inspection	1/5/2004
SB 2100-4	2	en	Mandatory Main Rotor Blade Corrosion Inspection and Protection	12/23/2005
SB 2100-8	3	en	Mandatory Main Rotor Blade Abrasion Strip Daily Inspection Requirements	4/29/2016
SB 2100-8	4	en	Mandatory Main Rotor Blade Abrasion Strip Daily Inspection Requirements	6/1/2017
SB 2100-9		en	Mandatory Main Rotor Blade - Enhanced 100-Hour Inspection Requirements	5/25/2017
SB 2100-11		en	Mandatory Main Rotor Blade - Enhanced 100-Hour Inspection Requirements	10/25/2019
SB 3100-4	4	en	Mandatory Tail Rotor Blade Abrasion Strip Tap Test and Modification	5/10/2006
SB 3100-5		en	Mandatory Tail Rotor Blade Pitch Control Arm Corrosion Inspection	8/25/2011

Service Notices
Name	Revision	Lang	Subject	Date
SN 204-2100-1		en	Main Rotor Blade Root End Periodic Inspection Requirements	7/5/2017
SN 204-2100-1	2	en	Main Rotor Blade Root End Periodic Inspection Requirements	9/13/2014
SN 204-2100-1	3	en	Main Rotor Blade Root End Periodic Inspection Requirements	12/12/2017
SN 2100-5		en	Main Rotor Blade Root Fitting Periodic Inspection Requirements	8/25/2014
SN 2100-6		en	Main Rotor Blade Abrasion Tape	10/12/2012
SN 2100-7		en	Main Rotor Blade Drain Hole Clearance	7/23/2015
SN 2100-8		en	Main Rotor Blade Abrasion Strip Periodic Inspection Requirements	1/25/2016
SN 2100-8	2	en	Main Rotor Blade Abrasion Strip Periodic Inspection Requirements	2/4/2016
SN 2100-10	draft	en	Main Rotor Blade Trim Tab Bending Limitations	9/27/2016
SN 3100-1		en	Tail Rotor Blade Tip Weight Retention Bolt Inspection	6/17/2003
SN 3100-2		en	Tail Rotor Blade Control Arm Bushing Sealing	6/17/2003
SN 3100-3		en	Tail Rotor Blade Pitch Arm Bushing Bore Fit Check	2/28/2007
SN 3100-6		en	Tail Rotor Blade Pitch Arm Corrosion Protection	6/4/2014
SN 3100-7		en	Tail Rotor Blade Drain Hole Clearance	7/23/2015

Miscellaneous
Name	Revision	Lang	Subject	Date
EASA		en	EASA Repair Station Approval	9/2/2016

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Service Information: Helicopter Technology

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