# STC ST00138AT

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Collins Aviation Service, United States
- Description: Installation of a Collins TCAS II system.
- Status date: February 27, 1995
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/17C626103E2BCF3E85256CC2006A70BD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00138AT

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757-200 ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

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