# STC SA3-703

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Systems Inc, United States
- Description: Installation of a Woodward propeller unfeathering system.
- Status date: March 20, 1992
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A4](https://openairdocs.org/tcds/5A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FDFAE721E2631C7585256CC20008CD14.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3-703

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company C50 ([TCDS 5A4](https://openairdocs.org/tcds/5A4))

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