FAA-listed STC holder

Sierra Industries Inc STCs

The Jun 30, 2026 FAA DRS snapshot lists 34 selected supplemental type certificates with status Current under Sierra Industries Inc. The records span 74 public aircraft directories and 8 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Jul 31, 2017

latest recorded revision

Recently revised records

Showing the 34 most recently revised records. Category directories provide the complete paginated discovery path.

34 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Sierra Industries Inc supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA142NW Normal and restricted category installation of recontoured wing leading edge and stall fences. Options: wing strut fillet or wing tips. Aircraft structures View record	Textron Aviation 188TC A9CE Textron Aviation 188ATC A9CE Textron Aviation A188TC A9CE Textron Aviation A188ATC A9CE	Current at cited snapshot Revised Jul 31, 2017 Application: Dec 5, 1974	FAA holder: Sierra Industries Inc FAA authority record
SA152RM Installation of extended range fuel tank and relocation of aft pressure bulkhead. Fuel systems View record	Textron Aviation 501TC A27CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 15, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA154NW Installation of full span flaps by removing aileron and changing deployment route of all flaps. Flight controls View record	Piper Aircraft PA-34-200TC A7SO Piper Aircraft PA-34-200TTC A7SO	Current at cited snapshot Revised Jul 31, 2017 Application: Dec 16, 1974	FAA holder: Sierra Industries Inc FAA authority record
SA18NW Installation of Fowler flaps, flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab. Flight controls View record	Textron Aviation 421TC A7CE Textron Aviation 421ATC A7CE Textron Aviation 421BTC A7CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 29, 1972	FAA holder: Sierra Industries Inc FAA authority record
SA2119WE Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals. Flight controls View record	Textron Aviation 150TC 3A19 Textron Aviation 150ATC 3A19 Textron Aviation 150BTC 3A19 Textron Aviation 150CTC 3A19 Textron Aviation 150DTC 3A19 Textron Aviation 150ETC 3A19 Textron Aviation 150FTC 3A19 Textron Aviation 150GTC 3A19 Textron Aviation 150HTC 3A19 Textron Aviation 150JTC 3A19 Textron Aviation 150KTC 3A19	Current at cited snapshot Revised Jul 31, 2017 Application: Jun 19, 1969	FAA holder: Sierra Industries Inc FAA authority record
SA215RM Installation of extended width cabin door. Cabin and interiors View record	Textron Aviation 501TC A27CE Textron Aviation 551TC A27CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 15, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA2312WE Installation of leading edge cuffs, stall fences, stall strips drooped ailerons, flap actuated stabilator trim system, raked wing tips(optional) and dorsal fin. Flight controls View record	Piper Aircraft PA-30TC A1EA Piper Aircraft PA-39TC A1EA	Current at cited snapshot Revised Jul 31, 2017 Application: Oct 16, 1970	FAA holder: Sierra Industries Inc FAA authority record
SA286NW Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, stall fences, aileron centering springs, and conical cambered wing tips. Flight controls View record	Textron Aviation 336TC A2CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 10, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA292NW Installation of cooling louvers on top of both (L.H. and R.H.) nacelle accessory sections. Engine and powerplant View record	Piper Aircraft PA-34-200TC A7SO Piper Aircraft PA-34-200TTC A7SO	Current at cited snapshot Revised Jul 31, 2017 Application: Feb 10, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA29NW Installation of Fowler Flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab. (402B NORMAL CATEGORY). Flight controls View record	Textron Aviation 401TC A7CE Textron Aviation 401ATC A7CE Textron Aviation 401BTC A7CE Textron Aviation 402TC A7CE Textron Aviation 402ATC A7CE Textron Aviation 402BTC A7CE	Current at cited snapshot Revised Jul 31, 2017 Application: Dec 8, 1972	FAA holder: Sierra Industries Inc FAA authority record
SA311NW Installation of full span flaps by removing aileron and changing the deployment route of all flaps. Flight controls View record	Piper Aircraft PA-32-300TC A3SO	Current at cited snapshot Revised Jul 31, 2017 Application: May 10, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA438NW Addition of Fowler wing flaps aileron droop system, elevator trim spring and new flap actuation system. Flight controls View record	Textron Aviation 421CTC A7CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 10, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA474NW Replace original split flaps with Fowler flaps. Other aircraft modifications View record	Textron Aviation 340TC 3A25 Textron Aviation 340ATC 3A25	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 10, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA48NW Installation of fowler flaps, flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab. Flight controls View record	Textron Aviation 414TC A7CE	Current at cited snapshot Revised Jul 31, 2017 Application: May 1, 1973	FAA holder: Sierra Industries Inc FAA authority record
SA503NW Removal of ailerons and installation of full span flaps and spoiler roll control system. Flight controls View record	Textron Aviation V35TC 3A15 Textron Aviation V35ATC 3A15 Textron Aviation V35BTC 3A15	Current at cited snapshot Revised Jul 31, 2017 Application: Jun 1, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA510NW Installation of Cessna fuel tank cap assembly. Fuel systems View record	Piper Aircraft PA-34-200TC A7SO Piper Aircraft PA-34-200TTC A7SO	Current at cited snapshot Revised Jul 31, 2017 Application: Aug 25, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA534NW Installation of wing tip fuel tanks of 17 gal. Capacity(each). Fuel systems View record	Piper Aircraft PA-34-200TTC A7SO	Current at cited snapshot Revised Jul 31, 2017 Application: Aug 18, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA592NW Installation of Fowler flaps. Other aircraft modifications View record	Textron Aviation 310GTC 3A10 Textron Aviation 310PTC 3A10 Textron Aviation 310QTC 3A10 Textron Aviation T310PTC 3A10 Textron Aviation T310QTC 3A10	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 21, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA645NW Installation of Eagle performance system, including recontoured wing leading edge, wing tip extension, increased gross weight, increased fuel capacity, and other minor refinements. Fuel systems View record	Textron Aviation 500TC A22CE	Current at cited snapshot Revised Jul 31, 2017 Application: Aug 1, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA672NW Installation of Hartzell HC-C3YF-1RF/F9587C-17S propeller on Continental IO-520-D engine. Engine and powerplant View record	Textron Aviation A188ATC A9CE	Current at cited snapshot Revised Jul 31, 2017 Application: Aug 11, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA707NW Installation of weather radar system. Avionics View record	Textron Aviation 36TC 3A15 Textron Aviation A36TC 3A15 Textron Aviation S35TC 3A15 Textron Aviation V35TC 3A15 Textron Aviation V35ATC 3A15 Textron Aviation V35BTC 3A15	Current at cited snapshot Revised Jul 31, 2017 Application: Oct 13, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA760NW Installation of RCA digital weather radar system. Avionics View record	Textron Aviation 210LTC 3A21 Textron Aviation 210MTC 3A21 Textron Aviation 210NTC 3A21 Textron Aviation P210NTC 3A21 Textron Aviation T210LTC 3A21 Textron Aviation T210MTC 3A21 Textron Aviation T210NTC 3A21	Current at cited snapshot Revised Jul 31, 2017 Application: Jan 24, 1979	FAA holder: Sierra Industries Inc FAA authority record
SA80RM Installation of extended range fuel tank and relocation of aft pressure bulkhead. Fuel systems View record	Textron Aviation 500TC A22CE Textron Aviation 550TC A22CE	Current at cited snapshot Revised Jul 31, 2017 Application: Mar 3, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA83RM Increased ramp and takeoff weights for restricted category operation. Aircraft performance View record	Textron Aviation 500TC A22CE	Current at cited snapshot Revised Jul 31, 2017 Application: Sep 1, 1976	FAA holder: Sierra Industries Inc FAA authority record
SA864NW Installation of RCA digital weather radar system. Avionics View record	Textron Aviation TU206FTC A4CE Textron Aviation TU206GTC A4CE Textron Aviation U206FTC A4CE Textron Aviation U206GTC A4CE	Current at cited snapshot Revised Jul 31, 2017 Application: Sep 25, 1979	FAA holder: Sierra Industries Inc FAA authority record
SA95RM Limited to Serial Number P-8, Registration N822D only. Installation of Nose Boom. Other aircraft modifications View record	Textron Aviation 60TC A12CE	Current at cited snapshot Revised Jul 31, 2017 Application: Jan 6, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA1513WE Installation of flap actuated aileron droop system recontoured wing leading edge and flap actuated elevator trim system. (206 EXCEPT TU206F, U206F, U206E, U206G, TU206G). Flight controls View record	Textron Aviation 206TC A4CE	Current at cited snapshot Revised Jul 14, 2017 Application: May 12, 1967	FAA holder: Sierra Industries Inc FAA authority record
ST02010LA Installation of a Kollsman General Aviation Vision System in a Cessna Model 550 airplane in FAA-Approved U.S. Technical Master Drawing List 4627-34-000, Revision B, dated February 25, 2007, or later FAA approved revision. FAA-Approved Airplane Flight Manual Supplement Number U10-0160, Revision "NC," dated March 7, 2077 or later FAA-approved revision is required as a part of this installation. Other aircraft modifications View record	Cessna Aircraft 550TC A22CE	Current at cited snapshot Revised Sep 7, 2010 Application: Apr 6, 2006	FAA holder: Sierra Industries Inc FAA authority record
SA444NW Installation of fowler flaps. Other aircraft modifications View record	Textron Aviation 310RTC 3A10 Textron Aviation T310QTC 3A10 Textron Aviation T310RTC 3A10	Current at cited snapshot Revised Sep 8, 2005 Application: Mar 10, 1977	FAA holder: Sierra Industries Inc FAA authority record
SA689NW Installation of transponder identification switch in the left hand control wheel. Avionics View record	Textron Aviation 500TC A22CE	Current at cited snapshot Revised Sep 8, 2005 Application: Nov 13, 1978	FAA holder: Sierra Industries Inc FAA authority record
SA174RM Installation of extended width cabin door. Cabin and interiors View record	Textron Aviation 500TC A22CE Textron Aviation 550TC A22CE Textron Aviation 560TC A22CE	Current at cited snapshot Revised Jul 21, 2005 Application: Apr 30, 1979	FAA holder: Sierra Industries Inc FAA authority record
SA2340WE Installation of recontoured wing leading edge, drooped ailerons in flaps down mode, wing strut fillet, stall fences, wing tips, flap actuated elevator trim and flap release handle. Flight controls View record	Cessna Aircraft A188ATC A9CE Cessna Aircraft A188TC A9CE Cessna Aircraft 188BTC A9CE Cessna Aircraft 188TC A9CE Cessna Aircraft A188BTC A9CE Cessna Aircraft 188ATC A9CE	Current at cited snapshot Revised Jul 21, 2005 Application: Jan 4, 1971	FAA holder: Sierra Industries Inc FAA authority record
SA3323NM Structural floor modification to facilitate an executive interior. Cabin and interiors View record	Boeing 747-300 SeriesTC A20WE	Current at cited snapshot Revised May 24, 2002 Application: Jul 12, 1983	FAA holder: Sierra Industries, Inc FAA authority record
SA1655AC-T Installation of Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex, generator removal, installation of wing stall strips and other minor refinements. Flight controls View record	Learjet Learjet 23TC A5CE	Current at cited snapshot Revised May 17, 2001 Application: Not listed	FAA holder: Sierra Industries, Inc FAA authority record

Sierra Industries Inc STCs

Modification mix

Aircraft represented

Recently revised records

Normal and restricted category installation of recontoured wing leading edge and stall fences. Options: wing strut fillet or wing tips.

Installation of extended range fuel tank and relocation of aft pressure bulkhead.

Installation of full span flaps by removing aileron and changing deployment route of all flaps.

Installation of Fowler flaps, flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab.

Installation of recontoured wing leading edge, stall fences, wing tips and positive aileron seals.

Installation of extended width cabin door.

Installation of leading edge cuffs, stall fences, stall strips drooped ailerons, flap actuated stabilator trim system, raked wing tips(optional) and dorsal fin.

Installation of drooped ailerons in flaps down mode, recontoured wing leading edge, stall fences, aileron centering springs, and conical cambered wing tips.

Installation of cooling louvers on top of both (L.H. and R.H.) nacelle accessory sections.

Installation of Fowler Flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab. (402B NORMAL CATEGORY).

Installation of full span flaps by removing aileron and changing the deployment route of all flaps.

Addition of Fowler wing flaps aileron droop system, elevator trim spring and new flap actuation system.

Replace original split flaps with Fowler flaps.

Installation of fowler flaps, flap actuated drooped ailerons, flap actuated elevator trim and anti- servo rudder trim tab.

Removal of ailerons and installation of full span flaps and spoiler roll control system.

Installation of Cessna fuel tank cap assembly.

Installation of wing tip fuel tanks of 17 gal. Capacity(each).

Installation of Fowler flaps.

Installation of Eagle performance system, including recontoured wing leading edge, wing tip extension, increased gross weight, increased fuel capacity, and other minor refinements.

Installation of Hartzell HC-C3YF-1RF/F9587C-17S propeller on Continental IO-520-D engine.

Installation of weather radar system.

Installation of RCA digital weather radar system.

Installation of extended range fuel tank and relocation of aft pressure bulkhead.

Increased ramp and takeoff weights for restricted category operation.

Installation of RCA digital weather radar system.

Limited to Serial Number P-8, Registration N822D only. Installation of Nose Boom.

Installation of flap actuated aileron droop system recontoured wing leading edge and flap actuated elevator trim system. (206 EXCEPT TU206F, U206F, U206E, U206G, TU206G).

Installation of fowler flaps.

Installation of transponder identification switch in the left hand control wheel.

Installation of extended width cabin door.

Installation of recontoured wing leading edge, drooped ailerons in flaps down mode, wing strut fillet, stall fences, wing tips, flap actuated elevator trim and flap release handle.

Structural floor modification to facilitate an executive interior.

Installation of Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex, generator removal, installation of wing stall strips and other minor refinements.