Aircraft STC directory

Boeing Airplane Wichita Division A75J1 (Army PT-18) STCs

The Jun 30, 2026 FAA DRS snapshot contains 20 selected supplemental type certificates with status Current whose public applicability data names the Boeing Airplane Wichita Division A75J1 (Army PT-18). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

20

listed Current at snapshot

10

holder directories

7

modification categories

Jun 9, 2026

latest recorded revision

Modification demand surface

Engine and powerplant7 Other aircraft modifications6 Flight controls2 Aircraft structures2 Avionics1 Fuel systems1 Landing gear and brakes1

Recorded holders

Airwolf Filter Corporation3 AvComp LLC2 J P Instruments2 uAvionix Corporation1 Andrew D. Humphrey1 Electronics International Inc.1 Radial Engines Ltd1 Aviation Development Corporation1 Oilamatic Inc1 Merlyn Products Inc.1

Recently revised A75J1 (Army PT-18) STCs

Showing the 20 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA00079NYEngine and powerplantRevised Jun 9, 2026

Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less.

FAA holder: Airwolf Filter Corporation

SA1540WEEngine and powerplantRevised Nov 8, 2025

Installation of Pratt & Whitney R-985-AN-1, -AN-3, -AN14B, or -AN14BM engine, Hamilton Standard 2D30/6101A-12 or 2D30/6101A-12 or 22D30/6533A-12 propeller, modified fuel and oil systems.

FAA holder: AvComp LLC

SA1703WEFlight controlsRevised Nov 8, 2025

Installation of Serv-Aero four aileron system.

FAA holder: AvComp, LLC

SA04568CHAvionicsRevised Jun 18, 2024

Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder functionality.

FAA holder: uAvionix Corporation

SA04776NY (2 OF2)Other aircraft modificationsRevised May 18, 2022

The HIPEC Covering and Finishing System must be performed and maintained.

FAA holder: HIPEC Aircraft Coatings Inc.

SA220SOOther aircraft modificationsRevised Jun 28, 2021

Tow bar, release mechanism, and safety tow link.

FAA holder: Fliegen Works Inc. \n d/b/a Pacific Aerial Tow Hooks

SE02712SEOther aircraft modificationsRevised Mar 12, 2021

Installation of the Oil Scavenging Pump System for Jacobs L-4 and R-755.

FAA holder: Henry F. Rogers

SA01282NYEngine and powerplantRevised Dec 20, 2017

Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.

FAA holder: Airwolf Filter Corporation

SA01406NYEngine and powerplantRevised Dec 20, 2017

Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and\nrotary wing.

FAA holder: Airwolf Filter Corporation

SA2586NMOther aircraft modificationsRevised Sep 20, 2017

Installation of J.P. Instruments temperature monitoring systems.

FAA holder: J P Instruments

SA01734SE (PG 3)Aircraft structuresRevised Oct 14, 2016

Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.

FAA holder: Andrew D. Humphrey

ST03413CHOther aircraft modificationsRevised Mar 12, 2015

Installation of an aircraft smoke system.

FAA holder: Yesteryear Aviation Inc

SA02853CHAircraft structuresRevised Jul 2, 2010

Installation of an external step on the left hand side of the fuselage.

FAA holder: Doubletee Products

SA02045SEFlight controlsRevised Jan 20, 2010

Modification of aircraft, and Fabrication and installation of Big Sky Stearman 4 Aileron Kit.

FAA holder: Big Sky Stearman

SA01988SE (PAGE 2)Engine and powerplantRevised Apr 16, 2009

Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P.

FAA holder: Electronics International Inc.

SA4974NMEngine and powerplantRevised May 1, 2008

Installation of Jacobs Model R-755-9, -A2 or B2 engine with Hamilton Std 2B20/6135-15 propellers.

FAA holder: Radial Engines Ltd

SA00402SEEngine and powerplantRevised Jan 23, 2007

Installation of a remote spin-on oil filter adapter. (GC-1B w/Lycoming or Cont 360 engine installed).

FAA holder: Aviation Development Corporation

SA00861SE (PG 1)Fuel systemsRevised Feb 9, 2004

Installation of J.P. Instruments (JPI) fuel flow indicating system in accordance with JPI Installation Manual FS-450, Report No. 400, Revision -, dated August 16, 2000, or later FAA approved revision.

FAA holder: J P Instruments

SA00453DEOther aircraft modificationsRevised Jun 11, 2001

Installation of Oilamatic preoiler system using FAA approved drawing list no. STEA400, Initial release, dtd 6/11/01 or later FAA approved revision.

FAA holder: Oilamatic Inc

ST00797SELanding gear and brakesRevised Jan 30, 2001

Install landing gear strut seal assembly.

FAA holder: Merlyn Products Inc.