# STCs that may be installed: Lycoming IGO-540-A1A

A list on [Lycoming IGO-540-A1A](https://openairdocs.org/engine/lycoming-igo-540-a1a.md).

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

- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH.md): Installation of SureFly electronic ignition · SureFly Partners Ltd.
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE.md): Installation of engine crankcase seal. · Ly-Con Rebuilding Company
- [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.
- [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.
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW.md): Installation of oil nozzles for lubrication of cam and filters. · Cygnet Aerospace Corp
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW.md): Miscellaneous engine cylinder replacement parts. · Continental Motors, Inc. · Lists IGO-540 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW.md): Installation of coated cylinders and piston rings. · Continental Motors, Inc. · Lists IGO-540 Series
- [STC SE7582SW](https://openairdocs.org/stc/SE7582SW.md): Grinding of high compression NITRIDED Cylinders to.010 oversize, as an alternative to chrome plating or rebarreling, and the installation of SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring · Superior Air Parts, Inc
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM.md): Installation of Precise Flight, Inc. Standby Vacuum System SVS III · Precise Flight Inc
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA.md): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. · Nickson's Machine Shop Inc · Lists IGO-540 Series
- [STC SE09492SC](https://openairdocs.org/stc/SE09492SC.md): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. · Exxon Company USA · Lists IGO-540 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE.md): Installation and usage of 'Mobil AV 1' aviation oil. · Mobil Research & Development Corp · Lists IGO-540 Series
- [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 · Lists IGO-540 Series
- [STC SE5924SW](https://openairdocs.org/stc/SE5924SW.md): Installation of stainless steel replacement exhaust studs on AVCO engines. · Perrigo & Steele Aircraft Engr Company · Lists IGO-540 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO.md): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. · ProTec · Lists IGO-540 Series
- [STC SE128NE](https://openairdocs.org/stc/SE128NE.md): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. · AMS/OIL · Lists IGO-540 Series
- [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 IGO-540 Series

## 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_engine_model_stc.parquet'
  WHERE engine_model_code IN ('41900')
  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/engine/lycoming-igo-540-a1a/stcs

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