# STC SA2730SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Eastern Airlines, Inc, United States
- Description: Installation of Bendix/King CAS-81 TCAS II system.
- Status date: July 16, 1990
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D43C9B1AB69321BD85256CC20008C829.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2730SO

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-9-30 Series ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-51 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

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