# STC SA3171SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Avionics Group Inc., United States
- Description: Installation of Litton LTN-211 Omega with program update.
- Status date: March 4, 1992
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A23WE](https://openairdocs.org/tcds/A23WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/44B274C54B80BBD485256CC2000A94C8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3171SO

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation L-1011-385-1 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))

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