# STCs that may be installed: N321AT

A list on [N321AT](https://openairdocs.org/aircraft/N321AT.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.

Page 1 of 2 · 71 STCs

- [STC SA04484CH](https://openairdocs.org/stc/SA04484CH.md): Installation of a Reabe Aircraft Improvement Power Gate Control System · Reabe Design LLC
- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE.md): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. · TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE.md): Fabrication and installation of Landing Light Controller · TCW Technologies, LLC
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY.md): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights · AeroLED's Holdings, LLC
- [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D.md): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System · Garmin International Inc.
- [STC SA09719AC](https://openairdocs.org/stc/SA09719AC.md): Installation electrostatic spray equipment and controls · Zee Systems Inc.
- [STC SA12204WI](https://openairdocs.org/stc/SA12204WI.md): Wing Spar Cap manufacturing process change · Air Tractor Inc.
- [STC SA03040CH](https://openairdocs.org/stc/SA03040CH.md): Installation of a digital payload hopper quantity and spray boom pressure indicating system · Reabe Design LLC
- [STC SA12083IB](https://openairdocs.org/stc/SA12083IB.md): Installation of the Avia Propeller Ltd. model V508H/108/A propeller · MT-Propeller Entwicklung GmbH
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH.md): Installation of L-3 Communications Avionics Systems · Acron Aviation Inc.
- [STC SA04046CH PAGE 1](https://openairdocs.org/stc/SA04046CH%20PAGE%201.md): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) · Acron Aviation Inc.
- [STC SA01995WI](https://openairdocs.org/stc/SA01995WI.md): Spray System Installation. See attached FAA Approved Model List (AML) SA01995WI for required data. · Aeronautix, LLC
- [STC SA04676CH](https://openairdocs.org/stc/SA04676CH.md): Installation of a True Quantity Gauge System · Reabe Design LLC
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE.md): Installation of Garmin GI 275 Multi-Function Display System · Garmin International Inc.
- [STC SA01851WI](https://openairdocs.org/stc/SA01851WI.md): Installation of a Hydraulic Actuator and Auger · Texas Transland LLC
- [STC SA02266SE](https://openairdocs.org/stc/SA02266SE.md): Installation of a Lever Throttle Quadrant · Kawak Aviation Technologies Inc
- [STC SA01801SE](https://openairdocs.org/stc/SA01801SE.md): Installation of a Kawak Aviation Technologies auxiliary system, and optional ancillary equipment. · Air Repair Inc.
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK.md): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed · ADS-B Technologies LLC
- [STC SA00888SE](https://openairdocs.org/stc/SA00888SE.md): Option 1: Install Walter M601-E11S engine and a Hartzell HC-B3TW-3/T10282N+4 propeller or a Walter M601-E11 engine and an Avia V508-E-AG 106/A propeller per the Master Drawing List and Installation Instructions given in Approved Model List SA00888SE. (Note: Prior to July 17, 2002, the model M601-E11S engine was designated as the model M601-E11 engine). Option 2: Install a Walter M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Flying Service Master Drawing List CFS-MDL-0001 Rev G, dated June 15, 2004, and Cascade Flying Service Document CFS-IM-107, Rev A, dated July 29, 2003, “Installation Instructions for Walter Turbine Installation on Air Tractor 300 & 400 Series Ag Aircraft,” or later FAA-approved revisions to these documents. NOTE: The Air Tractor model AT-400, AT-402B, AT-502, AT-502B, and AT-503A airplanes are not eligible for modification under option 2. · Cascade Flying Service LLC
- [STC SA01714WI](https://openairdocs.org/stc/SA01714WI.md): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. · Garmin International Inc
- [STC SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202.md): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. · Whelen Aerospace Technologies
- [STC SA02135SE](https://openairdocs.org/stc/SA02135SE.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) · Electronics International Inc.
- [STC SA04165NY](https://openairdocs.org/stc/SA04165NY.md): Installation of Latitude Technologies Skynode S200 Satcom system must be performed · Latitude Technologies Corporation
- [STC SA01323CH](https://openairdocs.org/stc/SA01323CH.md): Installation of a ground single point fueling system. · Turbine Conversions Ltd
- [STC SA04145NY](https://openairdocs.org/stc/SA04145NY.md): Installation of the Flight Data Acquisition Storage and Transmission System (Fast) · Amtech Aeronautical Limited
- [STC SA00905SE](https://openairdocs.org/stc/SA00905SE.md): Install modified engine cowl. · Cascade Flying Service LLC
- [STC SA02205SE](https://openairdocs.org/stc/SA02205SE.md): Installation of a replacement airframe fuel pump in accordance with Cascade Flying Service Master Drawing List FW-CFS545-90, Rev. B, dated October 19, 2011, or later FAA approved revision. · Cascade Aircraft conversions LLC
- [STC SA01745WI](https://openairdocs.org/stc/SA01745WI.md): Installation of a Cable Cutter System on the Main Landing Gear · Hershey Flying Service Inc
- [STC SA01845WI](https://openairdocs.org/stc/SA01845WI.md): Installation of a Center Windshield · Hershey Flying Services
- [STC SA09873AC](https://openairdocs.org/stc/SA09873AC.md): Installation of Night Vision Goggle (NVG) compatible lighting system in Air Tractor, Inc. · REB Technologies Inc
- [STC SA00382BO](https://openairdocs.org/stc/SA00382BO.md): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes · Avidyne Corporation
- [STC SA02276AK](https://openairdocs.org/stc/SA02276AK.md): Installation of AMSAFE Aviation Inflatable Restraints · AMSAFE Inc.
- [STC SA02119SE PAGE 1](https://openairdocs.org/stc/SA02119SE%20PAGE%201.md): Installation of Garmin GDL 88 ADS-B UAT Transceiver System · Garmin International Inc
- [STC SA03439CH](https://openairdocs.org/stc/SA03439CH.md): Installation of a Hartzell Propeller model.HC-B4TN-3C/T10702NS (4 Blade) · Aero Innovations LLC
- [STC SA02442AK PAGE 1](https://openairdocs.org/stc/SA02442AK%20PAGE%201.md): Approval of the L-3 Communications NGT 2000/2500 ADS-B system · ADS-B Technologies, LLC
- [STC SA00490LA](https://openairdocs.org/stc/SA00490LA.md): Installation of winglets. · Aero Spraying Service Inc.
- [STC SA01669CH](https://openairdocs.org/stc/SA01669CH.md): Installation of Challenger Reusable Air Filter · Challenger Aviation Products Inc.
- [STC SA02414SE](https://openairdocs.org/stc/SA02414SE.md): Installation of a Pratt & Whitney PT6A-41, PT6A-42 or PT6A-42A engine and Avia V508H/106B/A propeller · Cascade Aircraft conversions LLC
- [STC ST03554CH](https://openairdocs.org/stc/ST03554CH.md): Installation of Rotary Gatekeeper and provisions equipment · Turbine Conversions Ltd
- [STC SA03266CH](https://openairdocs.org/stc/SA03266CH.md): Installation of Reabe Aircraft Improvement modified ram air inlet system 7-1-0-000 · Reabe Aircraft Improvement Inc
- [STC SA00403SE](https://openairdocs.org/stc/SA00403SE.md): Installation of Vortex Generators on the wings · Micro AeroDynamics Inc
- [STC SA03199CH](https://openairdocs.org/stc/SA03199CH.md): Install auto fill fuel system · Wilbur-Ellis LLC
- [STC SA01281CH](https://openairdocs.org/stc/SA01281CH.md): Installation of turbine engine and a propeller and optional instrument panel · Johnson Airspray Inc.
- [STC SA8121SW](https://openairdocs.org/stc/SA8121SW.md): Installation of freon air conditioner · ZEE Systems Inc.
- [STC SA02985CH](https://openairdocs.org/stc/SA02985CH.md): Installation of a Cool Start System in accordance with Installation Instructions, Revision A, dated April 14, 2011, or later FAA Approved revision. · Turbine Conversions Ltd
- [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc.
- [STC SA02110CH](https://openairdocs.org/stc/SA02110CH.md): Installation of a Time Trac Data Recorder · P2 Incorporated
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc.
- [STC SA4005NM](https://openairdocs.org/stc/SA4005NM.md): Precise Flight Inc. Pulselite Control System · Precise Flight Inc
- [STC SA00961CH](https://openairdocs.org/stc/SA00961CH.md): Installation of hydraulically driven material dispersal gate for fire fighting applications. · Turbine Conversions Ltd

Next page: https://openairdocs.org/aircraft/N321AT/stcs.md?page=2

## 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 = '0390307'
    UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '52251')
  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/N321AT/stcs

---
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