# STC SA578AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hendrick David M., United States
- Description: Install PA-18 wing flaps on PA-12.
- Status date: March 26, 1976
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9208D3C7B4259CCF85256CC200122B76.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA578AL

## ADs that name it (0)

None.

## Approved models (1)

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

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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.