# STC SA431AL

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aircraft Innovations, LLC, United States
- Description: Replace original nose cowl with fiberglass.
- Applied: April 30, 1971
- Status date: September 11, 2009
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- Certificate PDF: https://openairdocs.org/files/sha256/bc/f7/bcf7b0021442295101bee9ae90d170954e585b9ca534fc56b3583cc512e16c16
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E69E0E3B52AF36A18625830E004BFAFA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA431AL

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

## What the certificate says

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

## Every issue (3)

- September 11, 2009: Amended, Current. [certificate](https://openairdocs.org/files/sha256/bc/f7/bcf7b0021442295101bee9ae90d170954e585b9ca534fc56b3583cc512e16c16)
- September 11, 2009: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/1f/67/1f673e8c8e3990038ccfb8576897130a4b32b65ca141e46a38dc12bc60ee8c41)
- May 7, 1979: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/2c/4a/2c4a7b98ea4873dd5afa3ae5538d6959f37fc379ea9bbacfa4846d22d9619288)

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