# STC SA1548GL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Basler Flight Service Inc, United States
- Description: Installation of Sundstrannd ground proximity warning system.
- Status date: January 4, 1991
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6518494A8EAA9C8C85256CC100821315.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1548GL

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-3C Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))

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