# STC SA4-976

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: AiResearch Aivation Service Co, United States
- Description: Interior modification including radio, instruments, and electronics.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A17](https://openairdocs.org/tcds/1A17)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1D042C93588A0C03862570D100520551.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-976

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-159 ([TCDS 1A17](https://openairdocs.org/tcds/1A17))

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