# STC SA1637SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Freitag's Aircraft Svc, Inc, United States
- Description: Installation of Lycoming O-320(150 hp) engine. Sensenick Model74DM6-0-57 propeller and Harrison Model APO7AU06-03 oil cooler.
- Status date: July 18, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A1](https://openairdocs.org/tcds/1A1)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3AA9EC3667DE5DA585256CC1008214D4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1637SO

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-16 ([TCDS 1A1](https://openairdocs.org/tcds/1A1))

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