# STCs that may be installed: Intermountain A-9A

A list on [Intermountain A-9A](https://openairdocs.org/model/intermountain-a-9a.md).

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

- [STC SA12428CH](https://openairdocs.org/stc/SA12428CH.md): Installation of the Lycoming Engines Electronic Ignition System (EIS) · Lycoming Engines, An Operating Division of AVCO Corporation
- [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 SA7965SW](https://openairdocs.org/stc/SA7965SW.md): Application of fabric and polyurethane finishing system. · Shady Aviation LLC
- [STC SA01435LA](https://openairdocs.org/stc/SA01435LA.md): Installation of engines modified with Firewall Forward Technologies LLC modified camshaft · Centri-Lube Technologies LLC
- [STC SA1151NW](https://openairdocs.org/stc/SA1151NW.md): Installation of the Flight Grip Model 135 Control Stick Grip · Air Products & Parts LLC
- [STC SA03286CH](https://openairdocs.org/stc/SA03286CH.md): Install an electronic engine ignition system · Electroair Acquisition Corporation
- [STC SA04032CH](https://openairdocs.org/stc/SA04032CH.md): Install rocker switch assemblies · Electroair Acquisition Corporation
- [STC SA04424AT](https://openairdocs.org/stc/SA04424AT.md): Installation of Continental Motors, Inc. (CMI) Shower-of-Sparks Starting Vibrator Booster Systems · Continental Motors, Inc.
- [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 SA01669CH](https://openairdocs.org/stc/SA01669CH.md): Installation of Challenger Reusable Air Filter · Challenger Aviation Products Inc.
- [STC SA1315WE](https://openairdocs.org/stc/SA1315WE.md): Installation of Mixture Monitor (exhaust gas temperature probe, gage and selector) in accordance with Delta Products Part Lists A-192 and A-193, or in accordance with Tri-Star Corporation Mixture Monitor Installation Instructions dated December 9, 1981, or later FAA approved revision and/or Drawing List MM-127 dated November 15, 1981, or later FAA approved revision in aircraft models listed in Master Eligibility List P-80-A-6 revised March 29, 1968, copy attached, or later FAA approved revision. · Universal Corporation
- [STC SA00769CH](https://openairdocs.org/stc/SA00769CH.md): Installation of Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system with Cylinder Head Temperature (CHT) monitoring capability on airframes with FAA approved installations of Textron Lycoming model IO-540, AEIO-540 and HIO-540 engines. · Champion Aerospace LLC
- [STC SA593CH](https://openairdocs.org/stc/SA593CH.md): Install Champion SlickSTART magneto booster system. · Champion Aerospace LLC
- [STC SA489EA](https://openairdocs.org/stc/SA489EA.md): Installation of ARP Inc. carburetor ice detection system · Aircraft & Rotorcraft Products (ARP) Inc
- [STC SA693CE](https://openairdocs.org/stc/SA693CE.md): Replace existing engine induction air filter with AC Spark Plug filter. · Brackett Aero Filters Inc.
- [STC SA2144CE](https://openairdocs.org/stc/SA2144CE.md): Operation on unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON + MON) /2. · Petersen Aviation Inc
- [STC SA4-1210](https://openairdocs.org/stc/SA4-1210.md): Installation of Eonnex cover on aircraft surfaces. · Ceconite, Inc
- [STC SA308EA](https://openairdocs.org/stc/SA308EA.md): Installation of carburetor ice detection system 105AP in single and twin engine aircraft and single engine helicopters powered by Continental, Franklin, and Lycoming type engines equipped with Marvel-Schebler MA-2, MA-3, MA-4, MA-4-5, MA-6 and HA-6 series carburetors. (Normal,Utility and Acrobatic Category airplanes and helicopters equipped with engines and carburetors as described.) · Alfred R Puccinelli
- [STC SA630WE](https://openairdocs.org/stc/SA630WE.md): Installation of oil filter assemblies. (NAVION A AND B with optional engine) · Nelson Filter
- [STC SA798EA](https://openairdocs.org/stc/SA798EA.md): Installation of Monitair exhaust gas combustion monitor kit. · Rosemount Engineering Co
- [STC SA01435DE](https://openairdocs.org/stc/SA01435DE.md): Installation of engines, modified with a Firewall Forward Technologies. · Centri-Lube Technologies LLC

## 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_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('4570424')
  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/model/intermountain-a-9a/stcs

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