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No. of STCs: 106

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09010SC	Status: Current	App Date: 02/24/1994	Rev Date: 07/14/2017
Description: Installation of a pilot's control wheel mounted, alternate gear horn silence switch.
TC Nos.: A27CE
Models: Textron Aviation Inc.501, 551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09010SC	Status: Historical	App Date: 02/24/1994	Rev Date: 07/14/2017
Description: Installation of a pilot's control wheel mounted, alternate gear horn silence switch.
TC Nos.: A27CE
Models: Textron Aviation Inc.501, 551
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09229SC	Status: Current	App Date: 05/24/1996	Rev Date: 07/14/2017
Description: Removal of mechanical factory nose baggage door stop assemblies and installation of pneumatic gas cylinder baggage door openers.
TC Nos.: A22CE, A27CE
Models: Textron Aviation Inc.500, 501, 550, 551, 560, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09377SC	Status: Current	App Date: 01/12/1996	Rev Date: 07/31/2017
Description: Install P&W Model JT15D-4 engines.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09862AC	Status: Current	App Date: 10/20/2015	Rev Date: 07/14/2017
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A1WI, A27CE
Models: Textron Aviation Inc.501, 525, 525A, 525B, 551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09862AC	Status: Historical	App Date: 10/20/2015	Rev Date: 09/27/2016
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A1WI, A27CE
Models: Textron Aviation Inc.501, 525, 525A, 525B, 551
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA09862AC	Status: Historical	App Date: 10/20/2015	Rev Date: 09/01/2016
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A1WI, A27CE
Models: Textron Aviation Inc.501, 525, 525A, 525B, 551
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA11050SC-D	Status: Current	App Date: 03/01/2011	Rev Date: 07/31/2017
Description: Installation of Optional Engine Indicating System (EIS)
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1382WE	Status: Current	App Date: 02/04/1966	Rev Date: 07/31/2017
Description: Installation of flap actuated aileron droop system.
TC Nos.: 3A13
Models: Textron Aviation Inc.182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182N, 182P, 182Q, 182R, R182, T182, TR182
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1400NW	Status: Current	App Date: 07/08/1980	Rev Date: 07/31/2017
Description: Removal of ailerons and install full span flaps, spoiler roll control system, and elevator downspring compensator.
TC Nos.: 3A15
Models: Textron Aviation Inc.36, A36
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1435WE	Status: Current	App Date: 05/12/1967	Rev Date: 07/31/2017
Description: Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, except 180J and K, actuated elevator trip system and installation of SC-100 stall warning system. (180, A, B, C, D, E, F, G, H, J, K LANDPLANE; FLOATPLANE AND AMPHIBIAN)
TC Nos.: 5A6
Models: Textron Aviation Inc.180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, 180K
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1441WE	Status: Current	App Date: 05/12/1967	Rev Date: 07/31/2017
Description: Installation of drooped ailerons in flaps down mode, recontoured wing leading edge (except A185F) stall fence, flap actuated elevator trim system and installation of SC-100 stall warning system. (A185F LANDPLANE; FLOATPLANE; AMPHIBIAN; SKIPLANE)
TC Nos.: 3A24
Models: Textron Aviation Inc.185, 185A, 185B, 185C, 185D, 185E, A185E, A185F
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1525WE	Status: Current	App Date: 05/12/1967	Rev Date: 07/31/2017
Description: Installation of droop ailerons in flaps down mode, recontoured wing leading edge, and elevator trim spring (except on T210K, L, M, and210K, L, and M).
TC Nos.: 3A21
Models: Textron Aviation Inc.210, 210-5 (205), 210-5A (205A), 210A, 210B, 210C, 210D, 210E, 210F, 210G, 210H, 210J, 210K, 210L, 210M, T210F, T210G, T210H, T210J, T210K, T210L, T210M
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1538NM	Status: Current	App Date: 12/23/1982	Rev Date: 07/31/2017
Description: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Cessna Model 500, Serial No. 0304 only. Installation of medical systems.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1562NM	Status: Current	App Date: 07/07/1983	Rev Date: 07/31/2017
Description: Installation of cargo liner and retention system.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1569NM	Status: Current	App Date: 10/24/1983	Rev Date: 07/31/2017
Description: Installation of side-looking camera hatch.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1596NM	Status: Current	App Date: 10/11/1983	Rev Date: 07/31/2017
Description: Installation of extended range fuselage auxiliary fuel tank.
TC Nos.: A14SW, A16SW
Models: Textron Aviation Inc.MU-300, MU-300-10
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1597NM	Status: Current	App Date: 12/01/1983	Rev Date: 07/31/2017
Description: Installation of aft fuselage fuel tank fill system.
TC Nos.: A14SW, A16SW
Models: Textron Aviation Inc.MU-300, MU-300-10
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1598NM	Status: Current	App Date: 02/27/1984	Rev Date: 07/31/2017
Description: Installation of tailcone baggage compartment modification,including access door modification.
TC Nos.: A14SW, A16SW
Models: Textron Aviation Inc.MU-300, MU-300-10
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1627WE	Status: Current	App Date: 10/25/1967	Rev Date: 07/31/2017
Description: Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, stall fences, aileron centering springs, conical cambered wing tips and flap actuated elevator trim spring.
TC Nos.: A23EU, A6CE
Models: Textron Aviation Inc.337, 337A, 337B, 337C, 337D, 337E, 337F, 337G, 337H, FT337GP, M337B, P337H, T337B, T337C, T337D, T337E, T337F, T337G, T337H, T337H-SP
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1663NM	Status: Current	App Date: 09/30/1981	Rev Date: 07/31/2017
Description: Addition of fowler wing flaps, elevator trim spring with cockpit tension select lever, fuselage strakes, and nacelle strakes.
TC Nos.: A7CE
Models: Textron Aviation Inc.421C
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1689WE	Status: Current	App Date: 05/12/1967	Rev Date: 07/31/2017
Description: Installation of drooped ailerons in flaps down mode, contoured wing leading edge and wing stall fences. (172A, B, C, D, E, F, G, H, K, L, M, N, P LANDPLANES AND FLOAT-PLANES) (172 LANDPLANES ONLY)
TC Nos.: 3A12
Models: Textron Aviation Inc.172, 172A, 172B, 172C, 172D, 172E, 172F (USAF T-41A), 172G, 172H (USAF T-41A), 172I, 172K, 172L, 172M, 172N, 172P
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1755NM	Status: Current	App Date: 09/20/1982	Rev Date: 07/31/2017
Description: Installation of positive flap retraction system.
TC Nos.: 1A15
Models: Piper Aircraft Inc.PA-24, PA-24-250, PA-24-260
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1756NM	Status: Current	App Date: 09/20/1982	Rev Date: 07/31/2017
Description: Installation of positive flap retraction system.
TC Nos.: A1EA
Models: Piper Aircraft Inc.PA-30, PA-39
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1782WE	Status: Current	App Date: 04/22/1968	Rev Date: 07/31/2017
Description: Installation of drooped ailerons, drooped wing leading edge, stall fence and rudder seal.
TC Nos.: 2A4
Models: Twin Commander Aircraft LLC680-E
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1977WE	Status: Current	App Date: 06/19/1969	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals.
TC Nos.: 3A19
Models: Textron Aviation Inc.150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2002WE	Status: Current	App Date: 06/19/1969	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals.
TC Nos.: 3A12
Models: Textron Aviation Inc.172, 172A, 172B, 172C, 172D, 172E, 172F (USAF T-41A), 172G, 172H (USAF T-41A), 172I, 172K, 172L
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2003WE	Status: Current	App Date: 06/19/1969	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals. (180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H LANDPLANE; SKIPLANE; FLOATPLANE)
TC Nos.: 5A6
Models: Textron Aviation Inc.180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2004WE	Status: Current	App Date: 06/19/1969	Rev Date: 07/31/2017
Description: Installation of contoured wing leading edge and following options: stall fences, Robertson wing tips, positive aileron seals.
TC Nos.: 3A13
Models: Textron Aviation Inc.182, 182A, 182B, 182C, 182D, 182E, 182F, 182G, 182H, 182J, 182K, 182L, 182M, 182N
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2121WE	Status: Current	App Date: 07/23/1969	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, drooped ailerons in flaps down mode, stall fences, and elevator trim spring.
TC Nos.: A16CE
Models: Textron Aviation Inc.207, 207A, T207, T207A
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2143WE	Status: Current	App Date: 01/27/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, drooped ailerons in flaps down mode, wing stall fences, fuselage flap, raked wing tips, flap actuated elevator trim spring, modified flap cove and dorsal fin. (PA-28-235 S/N28-10001 thru 28-7210023)
TC Nos.: 2A13
Models: Piper Aircraft Inc.PA-28-235
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2172NM	Status: Current	App Date: 07/27/1983	Rev Date: 07/31/2017
Description: Installation of LONGWING modification including wing tip extensions, extended pneumatic de-ice boot, increased fuel capacity, and other minor refinements.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2179WE	Status: Current	App Date: 04/07/1970	Rev Date: 07/31/2017
Description: Installation of leading edge cuff, drooped ailerons in flaps down mode, wing stall fences, raked wing tips, fuselage flap, stabilator trim spring and dorsal fin (optional). (PA-28-180 S/N 28-03, 28-1 thru 28-7205318; S/N 28-E13) (PA-28 SERIES 7305001 AN D UP
TC Nos.: 2A13
Models: Piper Aircraft Inc.PA-28-140, PA-28-150, PA-28-160, PA-28-180
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2189WE	Status: Current	App Date: 07/14/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, wing tips, and positive aileron seals. (185, 185A, 185B, 185C, 185E LANDPLANE; FLOATPLANE AND AMPHIBIAN) (185D SKIPLANE)
TC Nos.: 3A24
Models: Textron Aviation Inc.185, 185A, 185B, 185C, 185D, 185E, A185E
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2191WE	Status: Current	App Date: 04/17/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, and drooped ailerons in flaps down mode.
TC Nos.: 3A19
Models: Textron Aviation Inc.150D, 150E, 150F, 150G, 150H, 150J, 150K
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2192WE	Status: Current	App Date: 04/17/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, and drooped ailerons in flaps down mode.
TC Nos.: 3A19
Models: Textron Aviation Inc.150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2202WE	Status: Current	App Date: 05/19/1970	Rev Date: 07/31/2017
Description: Installation of recontoured leading edge, drooped ailerons in flaps down mode, fuselage flap, stabilator trim spring, wing stall fences, raked wing tips and dorsal fin (optional). (PA-28R-200 s/n 28R-35001 thru 28R-7135329 and s/n 28-R-235001 and up)
TC Nos.: 2A13
Models: Piper Aircraft Inc.PA-28R-180, PA-28R-200
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2217WE	Status: Current	App Date: 07/09/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, raked wing tips, fuselage flap, wing stall fences, drooped ailerons in flaps down mode and dorsal fin (optional). (PA-32S-300 landplane only)
TC Nos.: A3SO
Models: Piper Aircraft Inc.PA-32-260, PA-32-300, PA-32S-300
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2242WE	Status: Current	App Date: 08/21/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge and stall fences.
TC Nos.: 3A21
Models: Textron Aviation Inc.210, 210-5 (205), 210-5A (205A), 210A, 210B, 210C, 210D, 210E, 210F, 210G, 210H, 210J, 210K, 210L, 210M, T210F, T210G, T210H, T210J, T210K, T210L, T210M
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2326WE	Status: Current	App Date: 07/14/1970	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, and wing tips. (P206A LANDPLANE) (TP206E LANDPLANE AND SKIPLANE) (P206 LANDPLANE AND FLOATPLANE) (TU206E SKIPLANE)
TC Nos.: A4CE
Models: Textron Aviation Inc.206, P206, P206A, P206B, P206C, P206D, P206E, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, U206, U206A, U206B, U206C, U206D
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2327WE	Status: Current	App Date: 03/09/1971	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, stall fences, and wing tips.
TC Nos.: A16CE
Models: Textron Aviation Inc.207, 207A, T207, T207A
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2442WE	Status: Current	App Date: 08/26/1971	Rev Date: 07/31/2017
Description: Installation of dual hydraulic pump.
TC Nos.: 1A10
Models: Piper Aircraft Inc.PA-23-235, PA-23-250, PA-E23-250
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2445WE	Status: Current	App Date: 09/29/1971	Rev Date: 07/31/2017
Description: Installation of recontoured inboard wing leading edge, stall fences, drooped ailerons in flaps down mode, rudder anti-servo tab system.
TC Nos.: 1A10
Models: Piper Aircraft Inc.PA-23-235, PA-23-250, PA-E23-250
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2495WE	Status: Current	App Date: 12/15/1971	Rev Date: 07/31/2017
Description: Installation of recontoured wing leading edge, staff fences, drooped ailerons in flaps down mode, flap actuated stabilator trim system, new wing tips, SC-100 stall warning system.
TC Nos.: 1A15
Models: Piper Aircraft Inc.PA-24, PA-24-250, PA-24-260, PA-24-400
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2646NM	Status: Current	App Date: 08/01/1984	Rev Date: 07/31/2017
Description: Optional takeoff gross weight increase for airplanes modified in accordance with STC SA2172NM which includes wing tip extensions, extended pneumatic de-ice boot, and increased fuel capacity.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2714NM	Status: Current	App Date: 01/03/1984	Rev Date: 07/31/2017
Description: Installation of extended range fuselage auxiliary fuel tank
TC Nos.: A14SW
Models: Textron Aviation Inc.MU-300
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2736NM	Status: Current	App Date: 11/18/1985	Rev Date: 07/31/2017
Description: Installation of two-zone temperature control system MU-300 (S/N A023SA only)
TC Nos.: A14SW
Models: Textron Aviation Inc.MU-300
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2737NM	Status: Current	App Date: 10/24/1985	Rev Date: 07/31/2017
Description: Installation of aft fuselage maintenance access doors.
TC Nos.: A14SW
Models: Textron Aviation Inc.MU-300
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2744NM	Status: Current	App Date: 04/22/1986	Rev Date: 07/31/2017
Description: Installation of extended range fuselage auxiliary fuel tank.
TC Nos.: A16SW
Models: Textron Aviation Inc.400
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2745NM	Status: Current	App Date: 04/22/1986	Rev Date: 07/31/2017
Description: Installation of aft fuselage fuel tank fill system.
TC Nos.: A16SW
Models: Textron Aviation Inc.400
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3002WE	Status: Current	App Date: 01/08/1974	Rev Date: 07/31/2017
Description: Installation of wing tip fuel tanks of 17 gal capacity (each).
TC Nos.: A7SO
Models: Piper Aircraft Inc.PA-34-200
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3376NM	Status: Current	App Date: 01/09/1986	Rev Date: 07/31/2017
Description: Installation of fowler flaps and a flap activated elevator up spring.
TC Nos.: 3A25
Models: Textron Aviation Inc.320E
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3634SW	Status: Current	App Date: 10/24/1985	Rev Date: 07/14/2017
Description: Install three auxiliary bladder type fuel tanks in each wing.
TC Nos.: A4CE
Models: Textron Aviation Inc.206H, P206A, P206B, P206C, P206D, T206H, U206A, U206B, U206C, U206D, U206E, U206F, U206G
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3853SW	Status: Current	App Date: 02/10/1986	Rev Date: 07/31/2017
Description: Install three auxiliary bladder type fuel tanks in each wing.
TC Nos.: A16CE
Models: Textron Aviation Inc.207
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA3885NM	Status: Current	App Date: 10/22/1987	Rev Date: 07/31/2017
Description: Installation of medical air transport unit.
TC Nos.: A27CE
Models: Textron Aviation Inc.551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4098NM	Status: Current	App Date: 11/01/1990	Rev Date: 07/31/2017
Description: Installation of a replacement cabin door hinge assembly.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 560
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4099NM	Status: Current	App Date: 11/01/1990	Rev Date: 07/31/2017
Description: Installation of a replacement cabin door hinge assembly.
TC Nos.: A27CE
Models: Textron Aviation Inc.501, 551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA4406NM	Status: Current	App Date: 01/16/1982	Rev Date: 07/31/2017
Description: Installation of Pratt & Whitney JT15D-4 engines including minor aircraft modifications.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5218NM	Status: Current	App Date: 05/23/1991	Rev Date: 07/31/2017
Description: Installation of medical air transport unit.
TC Nos.: A22CE
Models: Textron Aviation Inc.550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5232NM	Status: Current	App Date: 09/16/1991	Rev Date: 07/31/2017
Description: Intallation of D.C. converter.
TC Nos.: A22CE
Models: Textron Aviation Inc.550, 560
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5233NM	Status: Current	App Date: 08/28/1991	Rev Date: 07/31/2017
Description: Installation of side-looking camera hatch.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 560
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5234NM	Status: Current	App Date: 08/28/1991	Rev Date: 07/31/2017
Description: Installation of a replacement cabin door optically flat window.
TC Nos.: A22CE
Models: Textron Aviation Inc.560
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5737SW	Status: Current	App Date: 04/05/1984	Rev Date: 07/31/2017
Description: Remove main landing gear doors and associated hydraulic system and cover the wheel wells with a fairing.
TC Nos.: 3A21
Models: Textron Aviation Inc.210K, 210L, 210M, P210N, T210K, T210L, T210M
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA5934SW	Status: Current	App Date: 09/28/1984	Rev Date: 07/14/2017
Description: Convert hydraulic nose gear door actuating system to mechanical system.
TC Nos.: 3A21
Models: Textron Aviation Inc.210K, 210L, 210M, P210N, T210K, T210L, T210M
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA732NW	Status: Historical	App Date: 05/04/1978	Rev Date: 07/31/2017
Description: Installation of Eagle SP performance system, including recontoured wing leading edge, wing tip extension, increased gross weight, increased fuel capacity, and other minor refinements.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA756NW	Status: Current	App Date: 11/27/1978	Rev Date: 07/31/2017
Description: Installation of a droop aileron system, stall fences and stall strips.
TC Nos.: 3A21
Models: Textron Aviation Inc.210N, P210N, T210N
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA760NW	Status: Historical	App Date: 01/24/1979	Rev Date: 09/08/2005
Description: Installation of RCA digital weather radar system.
TC Nos.: 3A21
Models: The Cessna Aircraft Company210L, 210M, 210N, P210N, T210L, T210M, T210N
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA7768SW	Status: Current	App Date: 03/23/1988	Rev Date: 07/31/2017
Description: Installation of replacement extended range bladder fuel cells. (206 S/N 206-0001 thru 206-0275 P206; S/N P206-0002 thru P206-0647) (U206 S/N U206-0276 - U206-4649)
TC Nos.: A4CE
Models: Textron Aviation Inc.206, P206, U206
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA7834SW	Status: Current	App Date: 01/05/1988	Rev Date: 07/31/2017
Description: Provisions for auxiliary fuel tanks for S/N 18502837 only.
TC Nos.: 3A24
Models: Textron Aviation Inc.A185F
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA7838SW	Status: Current	App Date: 03/23/1988	Rev Date: 07/31/2017
Description: Installation of replacement extended range bladder fuel cells.
TC Nos.: A16CE
Models: Textron Aviation Inc.207
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA7839SW	Status: Current	App Date: 03/23/1988	Rev Date: 07/31/2017
Description: Installation of replacement extended range bladder fuel cells. (210-5 (205) S/N 205-0001 - 205-0577) (210 S/N 21057841 - 21058818) (T210 SERIES S/N T210-0001-T210-0197)
TC Nos.: 3A21
Models: Textron Aviation Inc.210, 210-5 (205), T210F, T210G, T210H, T210J, T210K, T210L, T210M, T210N, T210R
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8020SW	Status: Current	App Date: 01/18/1991	Rev Date: 07/31/2017
Description: Installation of engine thrust reversers.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA802NW	Status: Current	App Date: 06/15/1979	Rev Date: 09/08/2005
Description: Installation of a transponder identification switch on left hand control wheel.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA805NW	Status: Current	App Date: 07/12/1979	Rev Date: 07/31/2017
Description: Installation of an engine cover storage box.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8176SW	Status: Current	App Date: 11/20/1989	Rev Date: 07/31/2017
Description: Install Pratt & Whitney Canada JT15D-1A engines.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8323SW	Status: Current	App Date: 12/26/1989	Rev Date: 07/31/2017
Description: Install Pratt & Whitney Canada PT6A-25C engine and Hartzell HC-B3TN-2/T10178(N)-8R propeller.
TC Nos.: A50EU
Models: Pilatus Aircraft LimitedPC-7
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8436SW	Status: Current	App Date: 04/06/1992	Rev Date: 07/31/2017
Description: Installation of Pratt & Whitney Canada JT15D-18 engines.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8437SW	Status: Current	App Date: 04/06/1992	Rev Date: 07/14/2017
Description: Installation of nose radome quick release mechanism.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 552, 560, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8458SW	Status: Current	App Date: 04/06/1992	Rev Date: 07/14/2021
Description: Installation of quick release nose radome latch mechanisms.
TC Nos.: A27CE
Models: Textron Aviation Inc.501, 551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8828SW	Status: Current	App Date: 11/29/1993	Rev Date: 07/14/2017
Description: Installation of inertial reel assembly on pilot and co-pilot shoulder harnesses.
TC Nos.: A27CE
Models: Textron Aviation Inc.501, 551
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8829SW	Status: Historical	App Date: 11/29/1993	Rev Date: 07/21/2005
Description: Installation of an inertial reel assembly on the pilot and co-pilot shoulder harnesses.
TC Nos.: A22CE
Models: The Cessna Aircraft Company500, 550
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8829SW	Status: Current	App Date: 11/29/1993	Rev Date: 07/14/2017
Description: Installation of an inertial reel assembly on the pilot and co-pilot shoulder harnesses.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA8855SW	Status: Current	App Date: 04/04/1994	Rev Date: 07/31/2017
Description: Installation of two Pratt & Whitney Canada JT15D-1B engines.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA892NW	Status: Current	App Date: 10/16/1979	Rev Date: 07/31/2017
Description: Addition of fowler wing flaps elevator trim spring with cockpit tension select lever, and fuselage strakes.
TC Nos.: A7CE
Models: Textron Aviation Inc.414A
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA903NW	Status: Current	App Date: 11/02/1978	Rev Date: 07/31/2017
Description: Installation of wing tip recognition lights.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA926NW	Status: Current	App Date: 04/14/1980	Rev Date: 07/31/2017
Description: Installation of wing tip recognition lights.
TC Nos.: A27CE
Models: Textron Aviation Inc.501
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA927NW	Status: Current	App Date: 01/07/1980	Rev Date: 07/31/2017
Description: Addition of fowler wing flaps, elevator trim spring with cockpit tension select lever, fuselage strakes, and nacelle strakes.
TC Nos.: A7CE
Models: Textron Aviation Inc.402C
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA932NW	Status: Current	App Date: 03/06/1980	Rev Date: 07/31/2017
Description: Limited to Cessna Model 500 airplane S/N 0292, ASTEC S/N 20 only. Installation of the Global navigation system, GNS500A.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA957NW	Status: Current	App Date: 01/29/1980	Rev Date: 07/31/2017
Description: Installation of RCA digital weather radar system.
TC Nos.: 3A13
Models: Textron Aviation Inc.182P, 182Q, 182R, R182, T182, TR182
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST00009DE	Status: Current	App Date: 09/29/1992	Rev Date: 07/31/2017
Description: Installation of a medical stretcher.
TC Nos.: A3EU
Models: Textron Aviation Inc.BAe.125 Series 800A
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST00232DE	Status: Current	App Date: 03/05/1996	Rev Date: 07/31/2017
Description: Installation of a cabin door optically flat window.
TC Nos.: A22CE
Models: Textron Aviation Inc.560
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST01767WI	Status: Historical	App Date: 12/09/2009	Rev Date: 10/21/2014
Description: Installation of Winglets.
TC Nos.: A16SW
Models: Beechcraft Corporation400A
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST02363LA	Status: Current	App Date: 03/11/2010	Rev Date: 07/31/2017
Description: Installation of Honeywell TFE731-50R engines.
TC Nos.: A3EU
Models: Textron Aviation Inc.Hawker 800XP
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST02538LA	Status: Historical	App Date: 12/28/2009	Rev Date: 07/14/2017
Description: Replacement of Pratt and Whitney JT15D-5 series engines with Williams International FJ44-4A-32 engines with Full Authority Digital Electronic Control (FADEC) and associated systems
TC Nos.: A16SW
Models: Textron Aviation Inc.400A
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST02538LA	Status: Historical	App Date: 12/28/2009	Rev Date: 06/18/2015
Description: Replacement of Pratt and Whitney JT15D-5 series engines with Williams International FJ44-4A-32 engines with Full Authority Digital Electronic Control (FADEC) and associated systems
TC Nos.: A16SW
Models: Beechcraft Corporation400A
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST02883NY-D	Status: Historical	App Date: 05/10/2011	Rev Date: 08/22/2016
Description: Installation of Rockwell Collins Pro Line 21
TC Nos.: A16SW
Models: Beechcraft Corporation400A
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09011SC	Status: Current	App Date: 02/14/1994	Rev Date: 07/14/2017
Description: Installation of a pilot's, control wheel mounted, alternate gear horn silence switch.
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09109SC	Status: Current	App Date: 02/24/1994	Rev Date: 07/31/2017
Description: Installation of avionics master switch.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09559AC	Status: Current	App Date: 06/12/1998	Rev Date: 07/14/2017
Description: Installation of Williams/Rolls FJ44-2A engine. Installation of STC SA732NW required for this mod.
TC Nos.: A22CE, A27CE
Models: Textron Aviation Inc.500, 501, 550, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09630AC	Status: Current	App Date: 06/26/2000	Rev Date: 07/31/2017
Description: Installation of Meggitt Avionics Engine Instrument Display System.
TC Nos.: A22CE, A27CE
Models: Textron Aviation Inc.500, 501, 550, 551, 560, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09718AC	Status: Current	App Date: 05/30/2008	Rev Date: 07/31/2017
Description: Installation of Artex C406 (406 MHz) Series emergency locator transmitter, antenna, and remote switch assembly
TC Nos.: A22CE, A27CE
Models: Textron Aviation Inc.500, 501, 550, 551, 560, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09863AC	Status: Current	App Date: 10/20/2015	Rev Date: 07/14/2017
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 560, S550
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09863AC	Status: Historical	App Date: 10/20/2015	Rev Date: 09/27/2016
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 560, S550
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09863AC	Status: Historical	App Date: 10/20/2015	Rev Date: 09/01/2016
Description: Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly
TC Nos.: A22CE
Models: Textron Aviation Inc.500, 550, 560, S550
ACO: Ft. Worth ACO Branch, Tel: +1 (817) 222-5140

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST09975SC	Status: Current	App Date: 07/14/2000	Rev Date: 07/31/2017
Description: Optimal maximum zero fuel weight (MZFW) increase for aircraft modified per STC SA2172NM installation of LONGWING Modification including wing tip extensions, extended pneumatic de-ice boot, increased fuel capacity, and other minor refinements.
TC Nos.: A22CE
Models: Textron Aviation Inc.500
ACO: AIR-760: Central Certification Branch FTW

STC Holder: Sierra Industries LTD 122 Howard Langford Drive, Uvalde, TX 78801, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: ST165RM	Status: Current	App Date: 03/15/1978	Rev Date: 07/31/2017
Description: Installation of fiberglass tail cone in lieu of metal tail cone.
TC Nos.: A22CE
Models: Textron Aviation Inc.550
ACO: AIR-760: Central Certification Branch FTW