# STC SA389NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: MACHen, Inc, United States
- Description: Installation of Continental IO-360-D engine and McCauley D2A34C67/76C-2 propeller and a gross weight increase.
- Status date: December 28, 1976
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-766](https://openairdocs.org/tcds/A-766)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4B47938AD153284285256CC2000C5B6E.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA389NW

## ADs that name it (0)

None.

## Approved models (1)

- Swift Museum Foundation Inc. GC-1B ([TCDS A-766](https://openairdocs.org/tcds/A-766))

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