# STCs that may be installed: N4591M A list on [N4591M](https://openairdocs.org/aircraft/N4591M.md). Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do. In force first, then newest. Page 1 of 5 · 205 STCs - [STC SA01233SE](https://openairdocs.org/stc/SA01233SE.md): Fabrication and installation of Alaskan Bushwheel LLC tail wheel and fork assembly · ABI, LLC - [STC SA04837NY](https://openairdocs.org/stc/SA04837NY.md): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights · AeroLED's Holdings, LLC - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH.md): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification · Swift Fuels LLC - [STC SA800EA](https://openairdocs.org/stc/SA800EA.md): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies · Whelen Aerospace Technologies - [STC SA00079NY](https://openairdocs.org/stc/SA00079NY.md): 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. · Airwolf Filter Corporation - [STC SA02525LA](https://openairdocs.org/stc/SA02525LA.md): Installation of Wheel and Brake Assemblies · Game Aerospace LLC - [STC SA01005DE](https://openairdocs.org/stc/SA01005DE.md): Installation of a EarthX ETX900-TSO Lithium battery · EarthX Inc. - [STC SA01704LA](https://openairdocs.org/stc/SA01704LA.md): Installation of the Grove Disk Brake System · Grove Aircraft Landing Gear Systems Inc. - [STC SA00081NY](https://openairdocs.org/stc/SA00081NY.md): Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector. · Alcor LLC - [STC SA7965SW](https://openairdocs.org/stc/SA7965SW.md): Application of fabric and polyurethane finishing system. · Shady Aviation LLC - [STC SA02764SE](https://openairdocs.org/stc/SA02764SE.md): Installation of Acme Aero Shock landing gear shock absorbers · Acme Suspensions LLC - [STC SA02765SE](https://openairdocs.org/stc/SA02765SE.md): Installation of Acme Stinger tailwheel landing gear shock absorber · Acme Suspensions LLC - [STC SA00715CH](https://openairdocs.org/stc/SA00715CH.md): Installation of Air Energy Service P/N J-3-212 ball type, sight fuel tank quantity gauge on the side of an AESI P/N AESI-125 12-gallon wing tank. · Crown MN Aviation LLC - [STC SA1496GL](https://openairdocs.org/stc/SA1496GL.md): Installation of a 12-gallon fuel tank and fuel system in the left wing or left and right wings. · Crown MN Aviation, LLC - [STC SA02386AK](https://openairdocs.org/stc/SA02386AK.md): Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems · AeroLED's Holding LLC - [STC SA03898NY](https://openairdocs.org/stc/SA03898NY.md): Installation and maintenance of ORATEX covering and coating material · Aircraft Design & Certification Ltd - [STC SA01343WI](https://openairdocs.org/stc/SA01343WI.md): Installation of B&C Specialty Products BC400 alternator · B & C Specialty Products Inc. - [STC SA02582AK](https://openairdocs.org/stc/SA02582AK.md): Installation of Airframes Alaska Brake Pedal and Master Cylinder Assembly · Airframes Alaska LLC - [STC SA02579AK](https://openairdocs.org/stc/SA02579AK.md): Installation of Swing bar · Willow Mountain Ranch - [STC SA1038SO](https://openairdocs.org/stc/SA1038SO.md): Installation of Aqua Model 1500 floats. · Outpost X Aviation Inc. - [STC SA02576AK](https://openairdocs.org/stc/SA02576AK.md): Installation of Cleveland and ABI, LLC Wheel and Brake Kits · ABI LLC - [STC SA02233AK](https://openairdocs.org/stc/SA02233AK.md): Installation of high visibility fuel sight gauge. · Dakota Cub Aircraft Inc. - [STC SA3-356](https://openairdocs.org/stc/SA3-356.md): Installation of Wipaire Skis Model C-2200 main ski and Model AWT-2500 or AWT-2500A tail wheel skis. · F.Atlee Dodge Aircraft Services - [STC SA3-357](https://openairdocs.org/stc/SA3-357.md): Installation of Wipaire Skis Model C-2200 main skis and Model AWT-2500 or AWT-2500A tail wheel ski. · F.Atlee Dodge Aircraft Services - [STC SA3-424](https://openairdocs.org/stc/SA3-424.md): Installation of Wiparie Skis Model CTF-2200 (Acft Skis) (FluiDyne) (Federal) tail ski on airplanes equipped with Scott Model 3000 tail wheel. · F.Atlee Dodge Aircraft Services - [STC SA02987CH](https://openairdocs.org/stc/SA02987CH.md): Installation of the Electroair Electronic Ignition System · Electroair Acquisition Corporation - [STC SA5-33](https://openairdocs.org/stc/SA5-33.md): Removed unbalanced tail surfaces and installed balanced tail surfaces. Install elevators, Piper P/N 12789-00 and 12789-01 and stabilizers, Piper P/N 12790-00 and 12790-01 · Wilbur Repair Service Marguerite Benson or Anne Wilbur - [STC SA01967WI](https://openairdocs.org/stc/SA01967WI.md): Use of GAMI G100UL High Octane Unleaded Avgas · General Aviation Modifications Inc. - [STC SA36CH](https://openairdocs.org/stc/SA36CH.md): Installation of Baumann Model 1420 floats. · Baumann Floats LLC - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY.md): The HIPEC Covering and Finishing System must be performed and maintained · HIPEC Aircraft Coatings Inc. - [STC SA02153AK](https://openairdocs.org/stc/SA02153AK.md): Installation of Burl's Aircraft Rebuild Magnum I tail wheel Penetration ski · Burl's Aircraft Rebuild LLC - [STC SA02214AK](https://openairdocs.org/stc/SA02214AK.md): Installation of Alpha Omega Suspension System in place of original bungees or bungees and hydasorbs. · Burl's Aircraft Rebuild LLC - [STC SA01015SE](https://openairdocs.org/stc/SA01015SE.md): Installation of eligible Alaska Bushwheel, Inc. wheels and TSO-C62d tires · ABI LLC - [STC SA02553AK](https://openairdocs.org/stc/SA02553AK.md): Fabrication and installation of a Tail Wheel Anti-Shimmy Dampener · Keller Engineering Group LLC - [STC SA220SO](https://openairdocs.org/stc/SA220SO.md): Tow bar, release mechanism, and safety tow link. · Fliegen Works Inc. d/b/a Pacific Aerial Tow Hooks - [STC SA02546AK](https://openairdocs.org/stc/SA02546AK.md): Installation of a replacement baggage compartment · Charles R. Gerbi - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation - [STC SA04032CH](https://openairdocs.org/stc/SA04032CH.md): Install rocker switch assemblies · Electroair Acquisition Corporation - [STC SA615EA](https://openairdocs.org/stc/SA615EA.md): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights. · Whelen Aerospace Technologies - [STC SA2057SO](https://openairdocs.org/stc/SA2057SO.md): Installation of shoulder harness. · Alpha Aviation Inc - [STC SA02212AK](https://openairdocs.org/stc/SA02212AK.md): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems · Seaplanes North LLC - [STC SA3606NM](https://openairdocs.org/stc/SA3606NM.md): Installation of landing gear fueling step. · F. Atlee Dodge Aircraft Services, LLC - [STC SA01734SE](https://openairdocs.org/stc/SA01734SE.md): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts. · Andrew D. Humphrey - [STC SA00780SE](https://openairdocs.org/stc/SA00780SE.md): Installation of the True Lock Safety Retention Axle Lock Nut System · True Lock LLC - [STC SA02566CH](https://openairdocs.org/stc/SA02566CH.md): Installation of the Custom Fiberglass Molding, Inc. (CFMI) Model 1500, 2250-001, or 2250-002 Aircraft Main Landing Gear Skis · Silveraire LLC - [STC SA02452AK](https://openairdocs.org/stc/SA02452AK.md): Installation of F. Atlee Dodge Aircraft Services, LLC, Pilot s Safety Barrier Net · F. Atlee Dodge Aircraft Services, LLC - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH.md): Installation of Cooper Superflite 102 Fabric. · Aviation Products Systems Inc. - [STC SA01768SE](https://openairdocs.org/stc/SA01768SE.md): Installation of an oil cooler system. · Steve's Aircraft - [STC SA4305WE](https://openairdocs.org/stc/SA4305WE.md): Installation of GAR-AERO wheel adapters and tundra type tires on the main landing gear · Seaplanes North LLC - [STC SA01669CH](https://openairdocs.org/stc/SA01669CH.md): Installation of Challenger Reusable Air Filter · Challenger Aviation Products Inc. Next page: https://openairdocs.org/aircraft/N4591M/stcs.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT m.matched_by, s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model FROM ( SELECT stc_number, min(side) AS side, arg_min(matched_by, side) AS matched_by, arg_min(matched_model, side) AS matched_model FROM (SELECT stc_number, 1 AS side, 'airframe' AS matched_by, matched_model FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet' WHERE aircraft_model_code = '7101102' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '17008') GROUP BY stc_number ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number) ORDER BY m.side, s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/aircraft/N4591M/stcs --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.