# STCs that may be installed: Cessna 421A

A list on [Cessna 421A](https://openairdocs.org/model/cessna-421a.md).

In force first, then newest. The registry doesn’t record which STCs an aircraft has.

Page 1 of 5 · 232 STCs

- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE.md): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. · TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE.md): Fabrication and installation of Landing Light Controller · TCW Technologies, LLC
- [STC SA02279AT](https://openairdocs.org/stc/SA02279AT.md): Installation of a Boom Beam bulb, starter, and ballast · Whelen Aerospace Technologies
- [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 SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D.md): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System · Garmin International Inc.
- [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 SA02511SE](https://openairdocs.org/stc/SA02511SE.md): Installation of replacement fuel quantity indicator sending unit(s) · CiES Inc.
- [STC SA5846NM](https://openairdocs.org/stc/SA5846NM.md): Installation of wing tank flexible fuel cells. · Aerosport Fuel Cells, LLC
- [STC SA5581SW](https://openairdocs.org/stc/SA5581SW.md): Installation of ALCOR true-flow/ totalizer system · Alcor LLC · Lists 421 Series
- [STC SA02731SE](https://openairdocs.org/stc/SA02731SE.md): Installation of Luma Technologies LT-4300 Series LED Display Panel and/or LT-4302 LED Gear Status Annunciator · Luma Technologies LLC
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH.md): Installation of L-3 Communications Avionics Systems · Acron Aviation Inc.
- [STC SA04046CH PAGE 1](https://openairdocs.org/stc/SA04046CH%20PAGE%201.md): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) · Acron Aviation Inc.
- [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 SA02658SE](https://openairdocs.org/stc/SA02658SE.md): Installation of Garmin GI 275 Multi-Function Display System · Garmin International Inc.
- [STC SA02571SE](https://openairdocs.org/stc/SA02571SE.md): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). · Garmin International Inc.
- [STC SA02532AT](https://openairdocs.org/stc/SA02532AT.md): Installation of subject Michelin tires on appropriate aircraft. For Michelin 5, 6, 8, and 10-inch rim diameter tires on General Aviation Aircraft. · Michelin North America Inc.
- [STC SA00756DE](https://openairdocs.org/stc/SA00756DE.md): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Sensor · Peregrine
- [STC SA02010WI](https://openairdocs.org/stc/SA02010WI.md): Installation of the Mid-Continent Instruments & Avionics MD23 FLEX Custom Function Display (CFD) · Mid-Continent Instruments and Avionics
- [STC SA197GL](https://openairdocs.org/stc/SA197GL.md): Install Cleveland conversion kit P/N 199-76. · Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI.md): Use of GAMI G100UL High Octane Unleaded Avgas · General Aviation Modifications Inc.
- [STC SA02203AK](https://openairdocs.org/stc/SA02203AK.md): Installation of FlightLogic Synthetic Vision Electronic Flight Information System (EFIS-SV). · Genesys Aerosystems Inc.
- [STC SA02254AK](https://openairdocs.org/stc/SA02254AK.md): Installation of "Single Screen", "2 or 3 Screen", "Dual Screen", or "4 or 6 screen" · Genesys Aerosystems Inc.
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK.md): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed · ADS-B Technologies LLC
- [STC SA4270SW](https://openairdocs.org/stc/SA4270SW.md): Mount collision avoidance lights in engine nacelle. · Johnson Aviation Products
- [STC SA09856AC](https://openairdocs.org/stc/SA09856AC.md): Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments · Honeywell International Inc (Bendix King)
- [STC SA11174SC PAGE 1](https://openairdocs.org/stc/SA11174SC%20PAGE%201.md): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems · Honeywell International Inc (Bendix King)
- [STC SA02265SE](https://openairdocs.org/stc/SA02265SE.md): Installation of a camera housing · Airborne Sensor LLC
- [STC SA01316LA](https://openairdocs.org/stc/SA01316LA.md): Installation of Sandel Avionics Terrain Awareness and Warning System. · Sandel Avionics LLC
- [STC SA10236SC](https://openairdocs.org/stc/SA10236SC.md): Installation of a GDC 31 Roll Steering Converter · DAC International Inc
- [STC SA03317CH](https://openairdocs.org/stc/SA03317CH.md): Installation of Max-Viz EVS-600 Enhanced Vision System · PECO Inc
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH.md): Installation of an air ambulance conversion kit. · Med-Pac Inc.
- [STC SA01714WI](https://openairdocs.org/stc/SA01714WI.md): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. · Garmin International Inc
- [STC SA2091WE](https://openairdocs.org/stc/SA2091WE.md): Installation of air conditioning system · Air Comm Corporation
- [STC SA00344BO PAGE 1](https://openairdocs.org/stc/SA00344BO%20PAGE%201.md): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. · Whelen Aerospace Technologies
- [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 SA00057SE](https://openairdocs.org/stc/SA00057SE.md): Installation of emergency medical stretcher, oxygen, and electrical systems. · LifePort LLC
- [STC SA01213CH](https://openairdocs.org/stc/SA01213CH.md): Install air ambulance conversion in accordance with Spectrum Aeromed Inc. Drawings as listed on AML SA01213CH, or later FAA approved revision. · Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SA00744DE](https://openairdocs.org/stc/SA00744DE.md): Installation of the Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT31 Transponder and an approved position sensor · Peregrine
- [STC SA00765DE](https://openairdocs.org/stc/SA00765DE.md): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor · Peregrine
- [STC SA04112CH](https://openairdocs.org/stc/SA04112CH.md): Installation of Appareo Systems, LLC Stratus ESG ADS-B transponder · Appareo Systems LLC.
- [STC SA09751DS](https://openairdocs.org/stc/SA09751DS.md): Installation of an S-TEC 01326 Digital Flight Control System (DFCS) · S-TEC Corporation
- [STC SA04165NY](https://openairdocs.org/stc/SA04165NY.md): Installation of Latitude Technologies Skynode S200 Satcom system must be performed · Latitude Technologies Corporation
- [STC SA02153LA-D PAGE 1](https://openairdocs.org/stc/SA02153LA-D%20PAGE%201.md): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System · Garmin International Inc.
- [STC SA02503AK](https://openairdocs.org/stc/SA02503AK.md): Installation of AMSAFE State of the Art Restraint System (SOARS) inflatable restraints · AMSAFE Inc.
- [STC SA02013CH](https://openairdocs.org/stc/SA02013CH.md): Installation of Avidyne Corporation Traffic Advisory System (TAS) · Avidyne Corporation
- [STC SA01828SE](https://openairdocs.org/stc/SA01828SE.md): Installation of J.P. Instruments (JPI) EDM-960 Primary Engine Data Management System · J. P. Instruments
- [STC SA01835WI](https://openairdocs.org/stc/SA01835WI.md): Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio · Peregrine
- [STC SA2872SW](https://openairdocs.org/stc/SA2872SW.md): Installation of wing nacelle locker tanks. · OCR Aviation

Next page: https://openairdocs.org/model/cessna-421a/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 s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
  SELECT stc_number, min(matched_model) AS matched_model
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('2076012')
  GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number
```

This list as a web page: https://openairdocs.org/model/cessna-421a/stcs

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