# STC SA1156SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Southern Air Transport Inc, United States
- Description: Installation of dual Litton, LTN-211, Omega navigation system(ONS).
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1SO](https://openairdocs.org/tcds/A1SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1539B5B4F210ACFC862570C700654365.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1156SO

## ADs that name it (0)

None.

## Approved models (2)

- Lockheed Aircraft Corporation 382E ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))
- Lockheed Aircraft Corporation 382G ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))

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