# STC SA00423LA

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Johnston Aircraft Svc Inc, United States
- Description: Installation of Hartzell HC-C3YR-1RF/F7590 propeller.
- Applied: April 21, 1997
- Status date: August 21, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A15](https://openairdocs.org/tcds/1A15)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B2971B8AA600F93D86256E75005753C8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00423LA

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-24-250 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))

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