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Aircraft STC directory

Cessna Aircraft 172H (USAF T-41A) STCs

The Jun 30, 2026 FAA DRS snapshot contains 122 selected supplemental type certificates with status Current whose public applicability data names the Cessna Aircraft 172H (USAF T-41A). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

122
listed Current at snapshot
73
holder directories
12
modification categories
May 20, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications48Avionics17Engine and powerplant13Flight controls11Aircraft structures10Fuel systems6Landing gear and brakes6Cabin and interiors5Propellers2Electrical systems2Cargo and special mission1Safety and emergency equipment1

Recorded holders

Aircraft Development Co5Curry Aviation LLC4Del-Air4Brittain Industries, Inc4Knots 2U Ltd.4D'Shannon Products Ltd.3Selkirk Aviation3Honeywell International Inc3Outpost X Aviation Inc.2Athena Aircraft, LLC2Steve's Aircraft2Stene Aviation Inc2BAS Inc2J P Instruments2Technisonic Industries Limited2Rosen Sunvisor Systems LLC2Power Flow Systems Inc.1Acron Aviation Inc.1Union Aviation LLC1Saf-Air Products Inc.1

Recently revised 172H (USAF T-41A) STCs

Showing the 100 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA01801ATEngine and powerplant

For the Cessna 172 airplane models incorporating Lycoming O-320 engines: Modification of the standard exhaust system as documented in Laminar Flow Systems Installation Instructions Document, "Laminar Flow System Extractor Exhaust System" Revision A, dated, November 20, 1998 and Technical Drawing List, Book No. PFS-B-800, dated, November 16, 1998 or per Power Flow Systems, Inc. Installation Instructions Document PFS-0058-00, Rev. A, dated October 5, 2001 and Master Drawing List, Report No. PFS-0032-00, Rev. IR, dated August 10, 2000, or later FAA approved revisions. For the Cessna 172 airplane models incorporating Lycoming O-320 ,O-360 0r IO-360 engines: Modify the standard exhaust system as document in Power Flow Systems, Inc. Installation Instructions Document PFS-13250-00, Rev B, dated, December 9, 2002 and Master Drawing list PFS-13240-00, Rev, IR, dated October 3, 2002.

FAA holder: Power Flow Systems Inc

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SA293NWOther aircraft modifications

Installation of Franklin 6A-350-C1 or 6A-350-C2 engines, Hartzell HC-C2YF-1BF/F8459A -4 to -8, HC-C2YF-1BF/F8459A-4Q to -8Q, or McCauley 2A31C21/84S-4 to -8 propellers in accordance with Seaplane Flying, Inc. Assembly and Installation Instructions SF 20690, SF20821, or SF 20820, on Cessna Models 170A, 170B, 172, 172A, 172B through P, 175, 175A, 175B and 175C as defined in AML. 2.) Installation of Franklin 6A-350-C1R engines, Hartzell HC-C2YF-1BF/F8459A-4 to -8, HC-C2YF-1BF/F8459-4Q to -8, McCauley 2A31C21/84S-4 to -8 or 2A34C201/90DA-10 to -14 propellers in accordance with Seaplane Flying Inc. Assembly and Installation Instructions SF 20690 on Cessna Models 170A, 170B (Serial Numbers 20267 to 26504) as defined in AML.

FAA holder: Franklin Aircraft Engines Inc.

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SA1813NMAircraft structures

Installation of Lompoc Aero Specialties inner Plexiglass pane in swing out window frames presently employing a single window in accordance with Lompoc Aero Specialties FAA sealed Eligibility List dated January 4, 1983, together with their FAA sealed Installation Instructions dated September 20, 1982, or later FAA approved revisions. Manufacture of the windows is controlled by Lompoc Aero Specialties Drawing LAS 1012 dated August 6, 1982, LAS 1013 dated October 5, 1982, and LAS 1014 dated October 6, 1982, or later FAA approved sealed revisions.

FAA holder: G & D Aero Products Inc.

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