# STC ST266CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Priester Aviation Service, United States
- Description: Installation of AlliedSignal MK-VI ground proximity warning system.
- Status date: January 17, 1996
- 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/3C14E0EC22E7B23A85256CC300035F98.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST266CH

## 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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