# STC SA01394CH-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: ElectroSonics, United States
- Description: Installation of an AlliedSignal CAS-66A Traffic Alert and Collision Avoidance System (TCAS I).
- Applied: April 18, 2001
- Status date: November 29, 2001
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A3AD11A58262B46486256E7400582530.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA01394CH-D

## ADs that name it (0)

None.

## Approved models (2)

- The Cessna Aircraft Company 525 ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))
- The Cessna Aircraft Company 525A ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))

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