# STCs that may be installed: N21VG A list on [N21VG](https://openairdocs.org/aircraft/N21VG.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 2 · 86 STCs - [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 SA00081NY](https://openairdocs.org/stc/SA00081NY.md): Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector. · Alcor LLC - [STC SA02594SE](https://openairdocs.org/stc/SA02594SE.md): SkyView HDX Instrumentation and Autopilot System manufactured · Dynon Avionics - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI.md): To allow the use of UL91 or UL94 (minimum) grade aviation fuel · Swift Fuels LLC - [STC SA04568CH](https://openairdocs.org/stc/SA04568CH.md): 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 · uAvionix Corporation - [STC SA00410BO](https://openairdocs.org/stc/SA00410BO.md): Installation of an AV-30-C Multi-Mode Indicator · uAvionix Corporation - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI.md): To allow the use of UL91 (minimum) grade aviation fuel · Petersen Aviation Inc - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation - [STC SA00024NY](https://openairdocs.org/stc/SA00024NY.md): Installation of Airwolf remote mounted engine oil filter kit AFC-K007 on single or multi-engine fixed wing light aircraft incorporating Lycoming reciprocating engines of 450 horsepower or less. · Airwolf Filter Corporation - [STC SA2586NM](https://openairdocs.org/stc/SA2586NM.md): Installation of J.P. Instruments temperature monitoring systems. · J P Instruments - [STC SA02428SE](https://openairdocs.org/stc/SA02428SE.md): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft · Henry F Rogers/David E Polley - [STC SA02930NY](https://openairdocs.org/stc/SA02930NY.md): Installation of Insight Instrument Corporation Graphic Engine Monitor (GEM 610C) models G3, G2, and G1 and 1200C model G4 as primary Cylinder Head Temperature (CHT), Exhaust Gas Temperature (EGT), and Turbine Inlet Temperature (TIT) Instruments · Insight Instrument Corporation - [STC SA02283SE PAGE 2](https://openairdocs.org/stc/SA02283SE%20PAGE%202.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P · Electronics International Inc. - [STC SA02402SE PAGE 2](https://openairdocs.org/stc/SA02402SE%20PAGE%202.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C · Electronics International Inc. - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc. - [STC SA01988SE](https://openairdocs.org/stc/SA01988SE.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P. · Electronics International Inc. - [STC SA563CH](https://openairdocs.org/stc/SA563CH.md): Authorizes installation of engines equipped w/Unison Limited Authority Spark Advance Regulator (LASAR) ignition system w/Cylinder Head Temp. (CHT) monitoring capability on airframes. engines. · Champion Aerospace LLC - [STC SA593CH](https://openairdocs.org/stc/SA593CH.md): Install Champion SlickSTART magneto booster system. · Champion Aerospace LLC - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT.md): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. · M-20 Oil Separators LLC - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM.md): Precise Flight Inc. Pulselite Control System · Precise Flight Inc - [STC SA2683NM](https://openairdocs.org/stc/SA2683NM.md): Installation of Precise Flight, Inc. stand-by vacuum system (SVS) · Precise Flight Inc - [STC SA01157LA](https://openairdocs.org/stc/SA01157LA.md): Installation of Electronics International Model FP-5 or FP-5L fuel flow/fuel pressure instrument as a replacement instrument. · Electronics International Inc. - [STC SA01944CH](https://openairdocs.org/stc/SA01944CH.md): Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index, per ASTM Specification D-439 or D-4818 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. · Experimental Aircraft Association Inc. - [STC SA870GL](https://openairdocs.org/stc/SA870GL.md): Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index. · EAA Aviation Foundation - [STC SA489EA](https://openairdocs.org/stc/SA489EA.md): Installation of ARP Inc. carburetor ice detection system · Aircraft & Rotorcraft Products (ARP) Inc - [STC SA09470SC](https://openairdocs.org/stc/SA09470SC.md): Installation of Starter Indicator light system. · Texas Skyways Inc - [STC SA02168AK](https://openairdocs.org/stc/SA02168AK.md): Installation of hourmeter airspeed switch. For unpressurized aircraft only. Pressurized aircraft must have pressurization system deactivated. · Avalaska Inc - [STC SA3203SO](https://openairdocs.org/stc/SA3203SO.md): Replacement of Cleveland brake disks, P/N 164-26A and/or 164-126A, with Appalachian Accessories stainless steel brake disks P/N 75-27. · Aviation Products, Inc - [STC SA00188AT](https://openairdocs.org/stc/SA00188AT.md): Installation of Appalachian Accessories carbon steel brake discs that have the melonite surface treatment, P/N AA-26A. · Aviation Products, Inc - [STC SA5159NM](https://openairdocs.org/stc/SA5159NM.md): Installation of chip detector system. · Northwest Aircraft Inc - [STC SA4412NM](https://openairdocs.org/stc/SA4412NM.md): Installation of tail wheel type landing gear. · Augustair, Inc - [STC SA4445NM](https://openairdocs.org/stc/SA4445NM.md): Installation of tail wheel type landing gear, large rudder, Lycoming 0-360-A4D engine, Sensenich 76EM8-0-60 propeller and associated installation components. · Augustair Inc - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International - [STC SA3862NM PAGE 2](https://openairdocs.org/stc/SA3862NM%20PAGE%202.md): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. · Electronics International - [STC SA001410BO](https://openairdocs.org/stc/SA001410BO.md): Installation of an AV-30-C Multi-Mode Indicator · uAvionix Corporation - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM.md): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. · Electronics International - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH.md): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22 · Swift Fuels LLC · Lists O-360-A1A - [STC SE00825WI](https://openairdocs.org/stc/SE00825WI.md): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. · B & C Specialty Products Inc. · Lists O-360-A1A - [STC SE208SO](https://openairdocs.org/stc/SE208SO.md): Installation of ice indicator in the carburetor. · LegacySTC.com - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH.md): Installation of SureFly electronic ignition · SureFly Partners Ltd. · Lists O-360-A1A - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE.md): Installation of engine crankcase seal. · Ly-Con Rebuilding Company · Lists O-360-A1A - [STC SE02352CH](https://openairdocs.org/stc/SE02352CH.md): Installation of Challenger cleanable oil filter assembly · Challenger Aviation Products Inc. · Lists O-360-A1A - [STC SE00939WI](https://openairdocs.org/stc/SE00939WI.md): Installation of B&C Specialty Products Model BC 315-() Starter on Lycoming engines. · B & C Specialty Products Inc. · Lists O-360-A1A - [STC SE2390CE](https://openairdocs.org/stc/SE2390CE.md): Installation of B & C Speciality Products. · B & C Specialty Products Inc. - [STC SE03232CH](https://openairdocs.org/stc/SE03232CH.md): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application · Hartzell Propeller Inc. · Lists O-360-A1A - [STC SE154SO](https://openairdocs.org/stc/SE154SO.md): Installation of one Roto-Master Turbocharger P/N's 600573-00 (RJ0326-1, RJ0326) or 600576-00 (RJ0326-2, RJ0325. · TALCO Aviation · Lists O-360-A1A - [STC SE04577CH](https://openairdocs.org/stc/SE04577CH.md): Install an electronic engine ignition system · Electroair Acquisition Corp · Lists O-360-A1A - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI.md): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines · General Aviation Modifications Inc. · Lists O-360-A1A - [STC SE4408SW](https://openairdocs.org/stc/SE4408SW.md): Miscellaneous engine cylinder replacement parts. · Continental Motors, Inc. - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW.md): Installation of coated cylinders and piston rings. · Continental Motors, Inc. Next page: https://openairdocs.org/aircraft/N21VG/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 = '9350104' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '41514') 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/N21VG/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.