# STC SA599SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apache Modification Aircraft Corporation, United States
- Description: Installation of fiberglass engine nose cowls.
- Applied: December 20, 1965
- Status date: December 27, 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/d4/e0/d4e04024e69db576a227435a7e4c80d47a8f2ee7223e5c2c5c9c9db30c14d7c8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8FB0931F2CF9FF2486257A150070349B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA599SW

## ADs that name it (0)

None.

## Approved models (2)

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

- December 27, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d4/e0/d4e04024e69db576a227435a7e4c80d47a8f2ee7223e5c2c5c9c9db30c14d7c8)

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