# STC ST603CH-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Duncan Aviation, United States
- Description: Upgrade of the existing Allied Signal mark V ground proximity warning system with windshear detection, to the AlliedSignal enhanced ground proximity warning system with windshear detection.
- Status date: July 28, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A50NM](https://openairdocs.org/tcds/A50NM)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F987F3CCB26BC68285256CC3000360A9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST603CH-D

## ADs that name it (0)

None.

## Approved models (1)

- Dassault-Aviation Falcon 2000 ([TCDS A50NM](https://openairdocs.org/tcds/A50NM))

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