# STC SA3-564

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Systems Inc, United States
- Description: This approval provides for the installation of a Woodward Governor propeller unfeathering accumulator kit number 210313.
- Status date: March 20, 1992
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/12603406A1F63FD985256CC20008CCC6.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-564

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- The New Piper Aircraft Inc. PA-23-160 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

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