# STC ST00322WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Midcoast Aviation Inc, United States
- Description: Installation of AlliedSignal CAS-67A traffic alert and collision avoidance system (TCAS II) and Dual MST-67A Mode S transponders with IVA-81A TA/RA/VSI indicators.
- Status date: May 26, 1995
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A9NM](https://openairdocs.org/tcds/A9NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B959D43439CAC53885256CC2006A7282.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST00322WI

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 650 ([TCDS A9NM](https://openairdocs.org/tcds/A9NM))

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