# STC SA2959SO

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: Avionics Group Inc, United States
- Description: Installation of Canadian Marconi CMA-771 Omega Naviagation systems.
- Applied: February 28, 1991
- Status date: December 29, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/7f/56/7f56791a62cb6d80da940687b024918f5256f8da53a8ed790dcacdf5f6e92cfb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F2A6B9329294C6588625756700588F97.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2959SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## 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/sha256/7f/56/7f56791a62cb6d80da940687b024918f5256f8da53a8ed790dcacdf5f6e92cfb)

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