# STC SA3078SO

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: Avionics Group Inc, United States
- Description: Installation of Bendix/King TRA-67A mode S transponder and TPA-81 TCAS II system.
- Applied: September 3, 1991
- Status date: December 29, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A23WE](https://openairdocs.org/tcds/A23WE)
- Certificate PDF: https://openairdocs.org/files/sha256/26/90/269096157cabf098425203a2ff7c919024b2188d5f08e6769eba81c1cc327573
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D099F5E23202EECD86257567005890BE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3078SO

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation L-1011 Series ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- December 29, 2008: Surrendered, Current. [certificate](https://openairdocs.org/files/sha256/26/90/269096157cabf098425203a2ff7c919024b2188d5f08e6769eba81c1cc327573)

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