# STCs that may be installed: Douglas C54-DC

A list on [Douglas C54-DC](https://openairdocs.org/model/douglas-c54-dc.md).

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

- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc.
- [STC SA4-492](https://openairdocs.org/stc/SA4-492.md): Installation of VIP P/N's 104-1-B and 104-1-C engine mount cores. · FTG, Inc.
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation
- [STC SA01282NY](https://openairdocs.org/stc/SA01282NY.md): 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. · Airwolf Filter Corporation
- [STC ST02468AK](https://openairdocs.org/stc/ST02468AK.md): Installation of a 3 generator electrical system · Alaska Air Fuels Inc
- [STC SA3254WE](https://openairdocs.org/stc/SA3254WE.md): Nose wheel installation. · United Aeronautical Corporation
- [STC SA3298WE](https://openairdocs.org/stc/SA3298WE.md): Bendix wheels and brakes installation. · United Aeronautical Corporation
- [STC ST334CH](https://openairdocs.org/stc/ST334CH.md): Installation of Superflite 102 fabric. · Aviation Products Systems Inc.
- [STC SA1-115](https://openairdocs.org/stc/SA1-115.md): Installation of Chamberlain 1012 Series radomes. · Saint-Gobain Performance Plastics Corp
- [STC SA1-507](https://openairdocs.org/stc/SA1-507.md): 2012X Series radomes. · Saint-Gobain Performance Plastics Corp
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW.md): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER) · Razorback Fabrics Inc
- [STC SA1365GL](https://openairdocs.org/stc/SA1365GL.md): Surrendered and incorporated into STC ST334CH. · Cooper Aviation Supply Company, Inc.
- [STC SA300CE](https://openairdocs.org/stc/SA300CE.md): Installation of Woodward propeller governors on single and twin engine aircraft. (PA-31-325 modified per Colemill STC SA 970SO) · Woodward Governor Company
- [STC SA1351WE](https://openairdocs.org/stc/SA1351WE.md): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12) · Ceconite Inc
- [STC SA3648WE](https://openairdocs.org/stc/SA3648WE.md): New enlarged 12 ft cargo door, new cargo floor, structural cargo crash barrier, modified FS 260 bulkhead relocated main elec junction box partially new DC elec distribution and control system, DC-6 wheels and brakes, misc changes for cargo operations. · Consulting Aerospace Engineers Inc
- [STC SA3603WE](https://openairdocs.org/stc/SA3603WE.md): Installation of fire retardant tanks. · Waig Aircraft, Inc
- [STC SA196SO](https://openairdocs.org/stc/SA196SO.md): Installation of Wright Military Cyclone R-2600-35 engines (as modified per STC SE610SO or R-2600-35 engines having WAD P/N 417916 or 424010 gear boxes). · Charlotte Aircraft Corporation
- [STC SA1117WE](https://openairdocs.org/stc/SA1117WE.md): Wing flap operated aural warning system. · Potter Aircraft Svc Inc
- [STC SA108SO](https://openairdocs.org/stc/SA108SO.md): B-600-1 oil separator. · Air Carrier Eng Service Inc
- [STC SA1183WE](https://openairdocs.org/stc/SA1183WE.md): RCA AVQ-75 distance measuring equipment (DME). · Johnson Flying Svc Inc
- [STC SA2IN](https://openairdocs.org/stc/SA2IN.md): Carrying cargo modification. · Aviation Traders Ltd
- [STC SA4-1399](https://openairdocs.org/stc/SA4-1399.md): Ceconite 101 covering of all fabric-covered surfaces. · Cooper Engineering Corporation
- [STC SA4-163](https://openairdocs.org/stc/SA4-163.md): Auxiliary fuselage oil tank modification. · California Eastern Aviation Inc
- [STC SA4-213](https://openairdocs.org/stc/SA4-213.md): Radio rack in crew compartment. · Asiatic Aeronautical Co., Ltd.
- [STC SA4-317](https://openairdocs.org/stc/SA4-317.md): Auxiliary oil tank. · Transocean Airlines
- [STC SA4-365](https://openairdocs.org/stc/SA4-365.md): Emergency inpact light. · Transocean Airlines
- [STC SA4-372](https://openairdocs.org/stc/SA4-372.md): CO and smoke detection system in belly baggage compartments. · Twentieth Century Aircraft Co
- [STC SA4-414](https://openairdocs.org/stc/SA4-414.md): Emergency lighting. · California Eastern Aviation Inc
- [STC SA4-446](https://openairdocs.org/stc/SA4-446.md): Seat track and passenger seat. · Overseas National Airways
- [STC SA4-47](https://openairdocs.org/stc/SA4-47.md): Generator system changed from 100 ampere to 200 ampere. · California Eastern Aviation Inc
- [STC SA4-488](https://openairdocs.org/stc/SA4-488.md): Modification of bulkhead, Station 260. · Transocean Airlines
- [STC SA4-498](https://openairdocs.org/stc/SA4-498.md): Engine mount core assemblies. · Dow-Elco Inc
- [STC SA4-540](https://openairdocs.org/stc/SA4-540.md): C-O-Two smoke detector system in cargo pits. · Transocean Airlines
- [STC SA4-633](https://openairdocs.org/stc/SA4-633.md): Bulkhead Station 858 relocated to Station 881. · Transocean Airlines
- [STC SA4-790](https://openairdocs.org/stc/SA4-790.md): C-O-Two smoke detector system in main cargo compartment and forward baggage compartment. · Transocean Airlines
- [STC SA4-843](https://openairdocs.org/stc/SA4-843.md): Cabin interior seating arrangement revised. · Transocean Airlines
- [STC SA53SO](https://openairdocs.org/stc/SA53SO.md): B-500-1 oil separator. · Air Carrier Eng Service Inc
- [STC SA938WE](https://openairdocs.org/stc/SA938WE.md): Aural warning device to sound at a 30 degree wing flap position, to be in operation when the landing gear is not down and locked. · Johnson Flying Svc Inc
- [STC SA1-140](https://openairdocs.org/stc/SA1-140.md): Cockpit heater and air intake and blower mounting. · Butler Aviation

## 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 ('3021504')
  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/douglas-c54-dc/stcs

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