# STC ST75CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: ElectroSonics Div of AiRadio Corporation, United States
- Description: Installation of Sundstrand Mark VI ground proximity warning system.
- Status date: April 29, 1994
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1BA0CDF9B60E0EEF85256CC30003749F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST75CH

## ADs that name it (0)

None.

## Approved models (3)

- Gulfstream Aerospace Corporation G-1159 ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))
- Gulfstream Aerospace Corporation G-1159A ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))
- Gulfstream Aerospace Corporation G-1159B ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

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