# STC ST541CH-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Garrett Aviation Services, United States
- Description: Installation of an AlliedSignal Avionics MK-VII, enhanced ground proximity warning system. (650 Citations III, VI and VII)
- Status date: January 25, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A9NM](https://openairdocs.org/tcds/A9NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/06677E2845FA32DC85256CC300036075.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST541CH-D

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 650 ([TCDS A9NM](https://openairdocs.org/tcds/A9NM))

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