# STC SA613SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apache Modification Aircraft Corporation, United States
- Description: Installation of dorsal fin and square tip fin and rudder.
- 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/ea/3e/ea3e03d2ab31a718a49cac0a082bf49ba687d0007f5903fad5c8ae5d73f41a0e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/883FC1E5254D616A86257A1500707E1B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA613SW

## 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/ea/3e/ea3e03d2ab31a718a49cac0a082bf49ba687d0007f5903fad5c8ae5d73f41a0e)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.