# STC SA176NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Butler Aircraft Co, United States
- Description: Installation of Fairchild Andover Model 204 auxiliary power unit for ground use only.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A10](https://openairdocs.org/tcds/4A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D5E5BC14CB94D26B862570C80065FD79.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA176NW

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-7 Series ([TCDS 4A10](https://openairdocs.org/tcds/4A10))

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