# STC SA509AL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Univair Aircraft Corp
- Description: Addition of crankcase relief valve.
- Status date: July 9, 1981
- Data sheets: 1A4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3EBA31E100A7E1D085256CC20012268A.0001
- Page: https://openairdocs.org/stc/SA509AL

## ADs that name it

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-20 Series (TCDS 1A4)

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