# STC ST00351AT

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: East Coast Avionics, Inc, United States
- Description: Installation of Bendix CAS 81 traffic alert and collision avoidance system and a Mode S transponder.
- Status date: October 28, 1993
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20EA](https://openairdocs.org/tcds/A20EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/39C9CE557B64EDA285256CC2006A72CE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00351AT

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier-Rotax GmbH DHC-7-100 ([TCDS A20EA](https://openairdocs.org/tcds/A20EA))

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