# STC ST00127AT

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Jefferson Waterman International, United States
- Description: Installation of a Sundstrand Data Control Mark VII ground proximity warning system (GPWS).
- Applied: October 20, 1992
- Status date: May 28, 2003
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8190F348CD37A0FB86256D780071626C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00127AT

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-9-83 (MD-83) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

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