FAA STC category
Engine and powerplant STCs
Engine, turbine, exhaust, nacelle, inlet, and related powerplant changes. This directory contains 1,512 selected records listed with status Current in the June 30, 2026 FAA DRS snapshot and links every entry to its source.
Installation of Paravion Technology PR-206SC-100 engine start counter system.
FAA holder: Dart Aerospace USA Inc.
Installation of engines modified with Firewall Forward Technologies LLC modified camshaft.
FAA holder: Centri-Lube Technologies LLC
Installation of Firewall Forward Technologies LLC modified camshaft.
FAA holder: Centri-lube Technologies LLC
Installation of a butterfly valve in the oil cooler inlet duct.
FAA holder: Westview Aviation LLC
Installation of Turbine Outlet Temperature Indicator.
FAA holder: DV Aviation Inc.
Installation of the Soloy turbine pac (Allison 250-C20S engine).
FAA holder: DV Aviation Inc.
Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (P210N S/N P21000001 THRU P21000834).
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of an air to air intercooler in the engine induction system downstream of the turbocharger. (See specific serial numbers) H S/N T210-308 THRU T210-0392).
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of engine induction air intercooler.
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of air to air intercooler in the engine air induction system. Airplane must have STC SA2689SW incorporated.
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of an air to air intercooler in the engine induction system downstream of the turbocharger.
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of an air intercooler in the engine induction system downstream of the turbocharger.
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of an intercooler in the engine air induction system.
FAA holder: Western Skyways Aircraft Modifications Inc.
Installation of an intercooler in the engine air induction system.
FAA holder: Western Skyways Aircraft Modifications Inc.
Replacement of Lycoming T53-L-13 series powerplant.
FAA holder: Midwest Aerospace TC LLC
Installation of a composite 'HOWL COWL,' mod comp engine cowling w/COWL FLAPS, full length nosegear close doors, belly fairing aft of firewall to streamline forward sec of exposed belly structures 'strakes' and large access doors on both sides of cowling.
FAA holder: Whelen Aerospace Technologies
Installation of new composite engine cowling with cowl flap and large inspection access doors on both sides of cowling.
FAA holder: Whelen Aerospace Technologies
Install an electronic engine ignition system.
FAA holder: Electroair Acquisition Corp
Installation of the Honeywell EDG-100 Connected Engine Data Access System.
FAA holder: Honeywell International Inc
Installation of a dual-isolator forward engine mount system.
FAA holder: Summit Aviation Inc.
Installation of a stainless steel exhaust system.
FAA holder: Summit Aviation Inc
Installation of a Stainless Steel Exhaust System.
FAA holder: Summit Aviation Inc.
Installation of a Teledyne Continental Motors Model IO-550-R engine.
FAA holder: Summit Aviation Inc.
Modification to install new engine mount brackets.
FAA holder: Summit Aviation Inc
Installation of Concorde RG Series Batteries in Piper Single Engine Airplanes.
FAA holder: Aero-Mach Wilco LLC
Installation of 180 Horsepower Lycoming engine and propeller combination.
FAA holder: Air Plains Services Corporation
Installation of composite engine cowling with cowl flap.
FAA holder: Whelen Aerospace Technologies
Modification of Honeywell TPE331-12JR-702TT engine.
FAA holder: TAE Aerospace (CTEC)
Installation of Pratt & Whitney Engine Services FAST (digital engine management) system.
FAA holder: Pratt & Whitney Engine Services Inc.
Installation of a Lycoming IO-540-K1G5 Engine.
FAA holder: Aeronautix LLC
Installation of Engine Chip Detectors.
FAA holder: Rocky Mountain Aircraft
Installation of a Lycoming engine with Sensenich propeller.
FAA holder: Fletchair Inc.
Installation of BLR Aerospace, LLC Inlet Barrier Filter.
FAA holder: BLR Aerospace LLC
Installation of an externally mounted exhaust silencer system.
FAA holder: ACC Columbia Jet Service GmbH
Installation of engine firewall in Hughes 369 model helicopter.
FAA holder: Thoroughbred Aviation Maintenance Inc
Modification of engine gearbox breather system by the installation of Heli-Tech "HT800-Engine Gearbox Breather Kit", P/N HT800.
FAA holder: Thoroughbred Aviation Maintenance Inc
Installation of a Pratt & Whitney PT6A-41, PT6A-42, or PT6A-42A engine and a Avia V508H/106B/A propeller.
FAA holder: Cascade Aircraft conversions LLC
Mount collision avoidance lights in engine nacelle.
FAA holder: Johnson Aviation Products
Mount collision avoidance lights in engine nacelle.
FAA holder: Johnson Aviation Products
Installation of alternate interstage turbine temperature indicator. P/N 935A-6012.
FAA holder: Mitsubishi Heavy Industries America Inc.
Installation of Jacobs RAS325A exhaust valve rotocaps.
FAA holder: Air Repair Inc
Installation of Acorn Welding C6SC1107-NG Exhaust stacks.
FAA holder: Acorn Welding Ltd.
Replace core assembly of Janitrol Engine Oil Cooler, part number 28E99-3, -4, -6, and -7.
FAA holder: Honeywell International Inc.
Remove turbocharger and fuel injection system and install carburetor.
FAA holder: North Point Aviation
Installation of fiberglass cowling and improved engine baffles.
FAA holder: Kevin Lancaster
Installation of improved carburetor air inlet and filter housing.
FAA holder: Kevin Lancaster
Installation of Societé de Motorisations Aéronautiques (SMA) Aircraft Diesel Engine model SR305-230-1 (or SR305-230 converted to model SR305-230-1 by incorporation of SMA Service Bulletin SB-01-76-002) and MT-Propeller model MTV-9-BS/198-58B propeller and other minor modification.
FAA holder: SMA Aero Engines GmbH