# STC SA354NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Seaplane Flying Inc, United States
- Description: Installation of a Franklin 6A-350-C2 engine, McCauley 2A31C21/84S-6 propeller with seaplane floats
- Applied: May 26, 1976
- Status date: May 5, 1978
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/65/8c/658cebc03da9d29ef484e4869e690f1366828801c919ab297b681ee07462287a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8294B0D9704CB76086257AD4006F0187.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA354NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## What the certificate says

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

## Every issue (1)

- May 5, 1978: Amended, Current. [certificate](https://openairdocs.org/files/sha256/65/8c/658cebc03da9d29ef484e4869e690f1366828801c919ab297b681ee07462287a)

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