# STC SA779SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apache Modification Aircraft Corporation, United States
- Description: Installation of auxiliary tanks in the nacelle over top of wing
- Applied: November 7, 1966
- 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/sha256/62/94/6294d32043e27b0b4a2a59b6012912c37524ae83a3ba720bdaf79c2a623fe6b9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0E396BB9FE798E5886256DAB0056311A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA779SW

## ADs that name it (0)

None.

## Approved models (4)

- 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))
- Piper Aircraft Inc. PA-23-235 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-23-250 ([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/sha256/62/94/6294d32043e27b0b4a2a59b6012912c37524ae83a3ba720bdaf79c2a623fe6b9)

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