# STC SA899SW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Apache Modification Aircraft Corporation, United States
- Description: Installation of Lycoming O-360-AID engine and Hartzell HC-C2YK-2RB/7666A-2 or HC-C2YK-2CUF/FC7666A-2 propeller.
- Applied: September 5, 1967
- Status date: February 24, 1999
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/9d/88/9d88e40792b6a1c6a50d775ca098dde9804aab95c0af000e710190753f58f9b9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B2137149730A9B6285256CC20058E9CF.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA899SW

## 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))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- February 24, 1999: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9d/88/9d88e40792b6a1c6a50d775ca098dde9804aab95c0af000e710190753f58f9b9)

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