# STC ST169CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aviation Technologies Group, United States
- Description: Installation of trim proximity sensor.
- Status date: August 26, 1994
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A31SO](https://openairdocs.org/tcds/A31SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5842733BDC3580E385256CC300035F53.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST169CH

## ADs that name it (0)

None.

## Approved models (3)

- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120 ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))
- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120ER ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))
- Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120RT ([TCDS A31SO](https://openairdocs.org/tcds/A31SO))

---
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.