# STCs that may be installed: N89GP

A list on [N89GP](https://openairdocs.org/aircraft/N89GP.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 SR02813CH](https://openairdocs.org/stc/SR02813CH.md): Fabrication of Isolair Innovator II Model 3900-480 Spray System · Isolair Inc.
- [STC SR04637CH](https://openairdocs.org/stc/SR04637CH.md): Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel · Airwolf Aerospace LLC
- [STC SR02120SE](https://openairdocs.org/stc/SR02120SE.md): Installation of Garmin GTN 6XX/7XX Navigation System · Garmin International Inc.
- [STC SR02704SE](https://openairdocs.org/stc/SR02704SE.md): Installation and maintenance of the Sunspot 36 and 46 series lights · AeroLED's Holdings LLC
- [STC SR01067DE](https://openairdocs.org/stc/SR01067DE.md): Installation of main battery replacement with Concorde Lead-Acid battery · Concorde Battery Corporation
- [STC SR03346CH](https://openairdocs.org/stc/SR03346CH.md): Installation of provisions for external equipment · Certex Aviation LLC
- [STC SR02124SE](https://openairdocs.org/stc/SR02124SE.md): Installation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality; · Garmin International Inc
- [STC SR00359BO](https://openairdocs.org/stc/SR00359BO.md): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. · Whelen Aerospace Technologies
- [STC SR02487AK](https://openairdocs.org/stc/SR02487AK.md): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System · ADS-B Technologies, LLC
- [STC SR02470AK](https://openairdocs.org/stc/SR02470AK.md): Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System · ADS-B Technologies, LLC
- [STC SR02471AK](https://openairdocs.org/stc/SR02471AK.md): Installation of the L-3 Communications NGT -9000/9000R ADS-B System · ADS-B Technologies, LLC
- [STC SR03465CH](https://openairdocs.org/stc/SR03465CH.md): Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-ECD-084-280, or AA-ECD-084-480 · Airwolf Aerospace LLC
- [STC SR03520NY](https://openairdocs.org/stc/SR03520NY.md): Installation of Rotor Head Cover · Spitfire Aerospace, LLC
- [STC SR03208CH](https://openairdocs.org/stc/SR03208CH.md): Installation of Lifeport, Inc. MedDeck Litter Kit · Helicopter Specialties, Inc.
- [STC SR09643RC](https://openairdocs.org/stc/SR09643RC.md): Installation of the L3 AN/AR-154 TACAN System and Sandel SN3500 EHSI System · Helicopter Specialties, Inc.
- [STC SR02394AK](https://openairdocs.org/stc/SR02394AK.md): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system · Seaplanes North LLC
- [STC SR03353CH](https://openairdocs.org/stc/SR03353CH.md): Installation of Aspen Avionics Evolution Primary and Multi-Functional Flight Displays · AspenSTC Inc
- [STC SR02232LA](https://openairdocs.org/stc/SR02232LA.md): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System · Garmin AT Inc.
- [STC SR01430LA](https://openairdocs.org/stc/SR01430LA.md): Installation of Stainless Steel Skid shoes. · Papas Gary Los Angeles Laboratories Inc.
- [STC SA00061LA](https://openairdocs.org/stc/SA00061LA.md): Installation of JPI digital tachometer. · J P Instruments
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International
- [STC SE5511NM](https://openairdocs.org/stc/SE5511NM.md): Installation of compressor discharge pressue (PC) valve. · Bell Helicopter Textron Inc.
- [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 SE00027EN](https://openairdocs.org/stc/SE00027EN.md): Installation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models. · Pratt & Whitney Engine Services Inc.
- [STC ST00037AT](https://openairdocs.org/stc/ST00037AT.md): Unison igniter plugs, P/N 9044400-1. · Unison Industries

## 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 = '3300561'
    UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '54189')
  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/N89GP/stcs

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