# STC SA660AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hendrick David M., United States
- Description: Installation of extended flaps, flap control system and modified ailerons.
- Status date: January 9, 1979
- 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/DB81C6B5BADF687C85256CC200569FBB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA660AL

## 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))

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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.