# STC ST00017WI-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rockwell Collins Inc, United States
- Description: Installation of alternate Collins TTR-920 TCAS R/T and dual Collins TDR-94D Mode S transponders.
- Status date: January 21, 1993
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A27NM](https://openairdocs.org/tcds/A27NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3AE0342433ED7D0C85256CC2006A6F43.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST00017WI-D

## ADs that name it (0)

None.

## Approved models (1)

- British Aerospace (England) ATP ([TCDS A27NM](https://openairdocs.org/tcds/A27NM))

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