# STC SA59AL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Univair Aircraft Corp, United States
- Description: Deviations from Lycoming O-290-D engine installation, approved under STC SA1-373. (PA-12 Land & Ski Plane)
- Applied: March 25, 1963
- Status date: July 9, 1981
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780)
- Certificate PDF: https://openairdocs.org/files/sha256/bb/08/bb08488c764b5726ff729797a60bff3995a4ec086f60fe32f6a30b661856390a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8BC29BBD637E433785256CC200569DBC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA59AL

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780))

## What the certificate says

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

## Every issue (1)

- July 9, 1981: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bb/08/bb08488c764b5726ff729797a60bff3995a4ec086f60fe32f6a30b661856390a)

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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.