# STCs that may be installed: N503AL

A list on [N503AL](https://openairdocs.org/aircraft/N503AL.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.

- [STC SE000EN](https://openairdocs.org/stc/SE000EN.md): Engines will be maintained IAW 'Maintenance or Reliable Engines(MORE) Program,' Rev 4, dated 8/16/95. · MORE Company Inc
- [STC SE10947SC](https://openairdocs.org/stc/SE10947SC.md): The conversion of the Pratt & Whitney Canada, Model PT6A-21 to a PT6A-28 turboprop engine · Prime Turbines
- [STC SE10552SC](https://openairdocs.org/stc/SE10552SC.md): Conversion of Pratt & Whitney Canada Corp. Model PT6A-27 or -28 to a Model PT6A-34 turboprop engine. · Prime Turbines LLC
- [STC SE02170AT](https://openairdocs.org/stc/SE02170AT.md): Installation of Pc Safety Valve Kit · Bell Helicopter Textron Inc.
- [STC SE02688NY](https://openairdocs.org/stc/SE02688NY.md): This modification would incorporate improved compressor components into the Pratt & Whitney PT6A-28 engine from the PT6A-135A engine. · Standard Aero Limited
- [STC SE00014EN](https://openairdocs.org/stc/SE00014EN.md): Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. · Pratt & Whitney Engine Services Inc.
- [STC SE00020EN](https://openairdocs.org/stc/SE00020EN.md): Installation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1 · Pratt & Whitney Engine Services Inc.
- [STC SE2960SO](https://openairdocs.org/stc/SE2960SO.md): Installation of an oil filler cap safety adapter. · Jet Avion Corporation
- [STC SE02273NY](https://openairdocs.org/stc/SE02273NY.md): Conversion of a Pratt & Whitney Canada PT6A-27 or PT6A-28 engine to operate as a PT6A-34 engine. · Atlantic Turbines International Inc.
- [STC SE615GL](https://openairdocs.org/stc/SE615GL.md): Incorporation of a fuel flow transducer. · Shadin Avionics
- [STC SE01805NY](https://openairdocs.org/stc/SE01805NY.md): Installation of Fuel Nozzle Adapters using studs and nuts. · Atlantic Turbines International Inc.
- [STC SE00691NY](https://openairdocs.org/stc/SE00691NY.md): Conversion of engine models PT6A-27 and -28 to Model PT6A-34 as described in Temporary Overhaul Data Revision. · Standard Aero Limited
- [STC SE09257SC](https://openairdocs.org/stc/SE09257SC.md): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. · Covington Aircraft Engines, Inc.
- [STC SE659NE](https://openairdocs.org/stc/SE659NE.md): Installation of oil tank filler neck check valve, P/N TSA-76A. · Aviation Components Support
- [STC SE1122EA](https://openairdocs.org/stc/SE1122EA.md): Repair of combustion chamber small exit duct, P/N 3012060. · Airwork Corporation
- [STC SE7677SW](https://openairdocs.org/stc/SE7677SW.md): Modifiy the P&W Canada PT-6A-27, -28, -15AG to the PT6A-34 configuration. · Airforce Turbine Service
- [STC SE1269EA](https://openairdocs.org/stc/SE1269EA.md): Stripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc. · Airwork Corporation
- [STC SE386NE](https://openairdocs.org/stc/SE386NE.md): Installation of Turbo Products PMA parts. · Audco Corporation
- [STC SE241NE](https://openairdocs.org/stc/SE241NE.md): Conversion of engine Models PT6A-27 and -28 to 01/157/3. · Airwork Corporation
- [STC SE5601SW](https://openairdocs.org/stc/SE5601SW.md): Replacement splined end and oil mist lubrication on accessory drive gearshaft. · Aviall of Texas, Inc
- [STC SE79NE](https://openairdocs.org/stc/SE79NE.md): Conversion to an aircooled compressor turbine vane ring configuration. · Airwork Corporation
- [STC SE1165EA](https://openairdocs.org/stc/SE1165EA.md): Assembly and installation of AW10262 wet spline starter gear seal. · Airwork Corporation
- [STC SE4607SW](https://openairdocs.org/stc/SE4607SW.md): Revise the starter-generator drive spline to provide lubrication with engine oil. · Aviall of Texas, Inc
- [STC SE4570SW](https://openairdocs.org/stc/SE4570SW.md): Revise accessory drive spline, P/N 3008181. · Aviall of Texas, Inc
- [STC SE12CE](https://openairdocs.org/stc/SE12CE.md): Installation of Gits Brothers Manufacturing Company dipstick filler cap assembly P/N 02297-2000. · Gits Brothers Mfg Co

## 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 = '0563218'
    UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '52248')
  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/N503AL/stcs

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