# STCs that may be installed: N504WM

A list on [N504WM](https://openairdocs.org/aircraft/N504WM.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 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 IO-360-AF
- [STC SE5583SW](https://openairdocs.org/stc/SE5583SW.md): Installation of fuel flow transducers (true-flow totalizer). · Alcor LLC
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH.md): Installation of SureFly electronic ignition · SureFly Partners Ltd. · Lists IO-360-A
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH.md): Installation of Challenger cleanable oil filter assembly · Challenger Aviation Products Inc. · Lists IO-360-A
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH.md): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application · Hartzell Propeller Inc. · Lists IO-360-A
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH.md): Install an electronic engine ignition system · Electroair Acquisition Corp · Lists IO-360-A
- [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 IO-360-A
- [STC SE8409SW](https://openairdocs.org/stc/SE8409SW.md): Installation of P/N CO-300-1 Oil Filter Adaptor with spin-on filter as a replacement for the existing oil screen · Stratus Tool Technologies LLC · Lists IO-360-A
- [STC SE1429SW](https://openairdocs.org/stc/SE1429SW.md): Installation of piston rings for chrome plated cylinders and cast iron valve guides · Continental Motors, Inc. · Lists IO-360-A
- [STC SE3330NM](https://openairdocs.org/stc/SE3330NM.md): Continental valve cover gasket · Real Gaskets Tennessee · Lists IO-360-A
- [STC SE909SO](https://openairdocs.org/stc/SE909SO.md): Installation of fuel line filters into the individual fuel injector lines in accordance with Beryl D Shannon Aviation Specialties, Inc. Installations Instructions BI 2510, approved September 17, 1976, or later FAA approved revision. · D'Shannon Products Ltd. · Lists IO-360-C
- [STC SE09846SC](https://openairdocs.org/stc/SE09846SC.md): Installation of S539800M30 starter adapter springs. · Aircraft Specialties Services Inc
- [STC SE822GL](https://openairdocs.org/stc/SE822GL.md): Installation of a Shadin Co. fuel flow transducer. · Shadin Avionics · Lists IO-360-C
- [STC SE01559SE](https://openairdocs.org/stc/SE01559SE.md): Modify the existing fuel induction system to install the Continental ES tuned induction system · Merlyn Sales Inc. · Lists IO-360-A
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM.md): Installation of Precise Flight standby vacuum system (SVS III). · Precise Flight Inc · Lists IO-360-A
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM.md): Intallation of adapter for externally mounted oil filter. · Aviation Development Corporation · Lists IO-360-A
- [STC SE09963SC](https://openairdocs.org/stc/SE09963SC.md): Installation of modified fuel injector nozzles. · General Aviation Modifications, Inc. · Lists IO-360-ES
- [STC SE09513SC](https://openairdocs.org/stc/SE09513SC.md): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. · Exxon Company USA
- [STC SE09401SC](https://openairdocs.org/stc/SE09401SC.md): Installation of modified fuel injector nozzles. · General Aviation Modifications, Inc. · Lists IO-360-A
- [STC SE00577NY](https://openairdocs.org/stc/SE00577NY.md): Installation of Canadian Aero Mfg. (C.A.M.) Oil Coolers. · Canadian Aero Manufacturing
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE.md): Installation of sump mounted chip detector. · Aviation Development Corporation · Lists IO-360-A
- [STC SE00427NY](https://openairdocs.org/stc/SE00427NY.md): Installation, operation and inspection of CAM oil coolers. · Canadian Aero Manufacturing · Lists IO-360-A
- [STC SE1436CE](https://openairdocs.org/stc/SE1436CE.md): Modify engine to obtain 210 hp, 2800 rpm for 5 minutes at takeoff and 195 hp 2600 rpm maximum continuous. · Isham Brad E · Lists IO-360-K
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW.md): Installation and usage of AEROSHELL · Shell Development Co
- [STC SE414NE](https://openairdocs.org/stc/SE414NE.md): Installation of Auto-Vac-2 instrument vacuum system. · Raymond Ives · Lists IO-360-C
- [STC SE452NE](https://openairdocs.org/stc/SE452NE.md): Installation and usage of 'Mobil AV 1' aviation oil. · Mobil Research & Development Corp
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW.md): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. · Phillips Petroleum Co
- [STC SE244NE](https://openairdocs.org/stc/SE244NE.md): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. · Mattituck Airbase, Inc
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO.md): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. · ProTec
- [STC SE99WE](https://openairdocs.org/stc/SE99WE.md): Installation of Equa-Flo fuel/air induction system. · Circle Machine Company · Lists IO-360-A
- [STC SE234GL](https://openairdocs.org/stc/SE234GL.md): Installation of a steel pin in Continental fuel pump, P/N 638157. · Approved Aircraft Accessories, Inc. · Lists IO-360-A
- [STC SE12GL](https://openairdocs.org/stc/SE12GL.md): Installation of oil filler cap. · Ray Whyte Electric Products Co. · Lists IO-360-A
- [STC SE44WE](https://openairdocs.org/stc/SE44WE.md): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. · Kling Oil Company · Lists IO-360-A

## 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 = '0563260'
    UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '17025')
  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/N504WM/stcs

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