# STC ST71CH-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Garrett Aviation Services, United States
- Description: Installation of a Collins TCAS-94 Traffic Alert and Collision Avoidance System with Collins TDR-94D Mode S Transponders.
- Status date: November 7, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3EU](https://openairdocs.org/tcds/A3EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/63935000B567639785256CC3000360E3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST71CH-D

## ADs that name it (0)

None.

## Approved models (2)

- Raytheon Aircraft Company BAe.125 Series 800A (C-29A; U-125) ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))
- Raytheon Aircraft Company HS.125 Series 700A ([TCDS A3EU](https://openairdocs.org/tcds/A3EU))

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