# STCs that may be installed: N28521

A list on [N28521](https://openairdocs.org/aircraft/N28521.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 SA04652CH](https://openairdocs.org/stc/SA04652CH.md): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification · Swift Fuels LLC
- [STC SA01757WI](https://openairdocs.org/stc/SA01757WI.md): To allow the use of UL91 or UL94 (minimum) grade aviation fuel · Swift Fuels LLC
- [STC SA03898NY](https://openairdocs.org/stc/SA03898NY.md): Installation and maintenance of ORATEX covering and coating material · Aircraft Design & Certification Ltd
- [STC SA04568CH](https://openairdocs.org/stc/SA04568CH.md): Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder functionality · uAvionix Corporation
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI.md): Use of GAMI G100UL High Octane Unleaded Avgas · General Aviation Modifications Inc.
- [STC SA04776NY](https://openairdocs.org/stc/SA04776NY.md): The HIPEC Covering and Finishing System must be performed and maintained · HIPEC Aircraft Coatings Inc.
- [STC SA4-45](https://openairdocs.org/stc/SA4-45.md): Engine mount for Continental W670 engine. · Robert West
- [STC SA00410BO](https://openairdocs.org/stc/SA00410BO.md): Installation of an AV-30-C Multi-Mode Indicator · uAvionix Corporation
- [STC SA01831WI](https://openairdocs.org/stc/SA01831WI.md): To allow the use of UL91 (minimum) grade aviation fuel · Petersen Aviation Inc
- [STC SA01406NY](https://openairdocs.org/stc/SA01406NY.md): Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and rotary wing · Airwolf Filter Corporation
- [STC SA02428SE](https://openairdocs.org/stc/SA02428SE.md): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft · Henry F Rogers/David E Polley
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH.md): Installation of Cooper Superflite 102 Fabric. · Aviation Products Systems Inc.
- [STC SA02283SE PAGE 1](https://openairdocs.org/stc/SA02283SE%20PAGE%201.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P · Electronics International Inc.
- [STC SA02402SE PAGE 1](https://openairdocs.org/stc/SA02402SE%20PAGE%201.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C · Electronics International Inc.
- [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc.
- [STC SA01988SE](https://openairdocs.org/stc/SA01988SE.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P. · Electronics International Inc.
- [STC SA02033AT](https://openairdocs.org/stc/SA02033AT.md): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. · M-20 Oil Separators LLC
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW.md): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER) · Razorback Fabrics Inc
- [STC SA00068LA](https://openairdocs.org/stc/SA00068LA.md): Installation of tail wheel adapter ring. · R-R-R-Russ Aircraft
- [STC SA2243CE](https://openairdocs.org/stc/SA2243CE.md): Operation of airplane on unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive, 88 minimum antiknock index (RON+MON) /2 per ASTM Specification D-439. Intermixing with aviation gasoline also approved. · Petersen Aviation Inc · Lists 24W Series
- [STC SA4-1210](https://openairdocs.org/stc/SA4-1210.md): Installation of Eonnex cover on aircraft surfaces. · Ceconite, Inc
- [STC SA291NW](https://openairdocs.org/stc/SA291NW.md): Installation of a Jacobs R-755-9 engine and a Hamilton Standard 2B20/6135-15 propeller · Coriell, Kenneth
- [STC SA4-863](https://openairdocs.org/stc/SA4-863.md): Eonite covering of complete airplane. · Lott William C · Lists 24W Series
- [STC SA4-42](https://openairdocs.org/stc/SA4-42.md): Engine mount for Jacobs R-755 engine. · Serv-Aero Engr Inc · Lists 24W Series
- [STC SA4-985](https://openairdocs.org/stc/SA4-985.md): Fiberglass covering on wings, ailerons, and fuselage. · Glasco-Air Products · Lists 24W Series
- [STC SA001410BO](https://openairdocs.org/stc/SA001410BO.md): Installation of an AV-30-C Multi-Mode Indicator · uAvionix Corporation

## 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 = '3370608'
    UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '64503')
  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/N28521/stcs

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.