# STC SA1-50

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Hartzell Propeller, Inc, United States
- Description: Installation of Hartzell Propellers without and with unfeathering kit.
- Status date: October 23, 1967
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-2-582](https://openairdocs.org/tcds/A-2-582)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D48BC0F16064911185256CC10080DB78.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-50

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company Army AT-11 ([TCDS A-2-582](https://openairdocs.org/tcds/A-2-582))

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