# STC SA414NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Salem Aviation, United States
- Description: Installation of Lycoming O-360-A1F6D engine and McCauley propeller and associated systems
- Applied: March 3, 1977
- Status date: March 15, 1977
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/98/d9/98d97ee32f731190510c573bd66b3787a5128cebb97f72ed5691fd027e53c601
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F091687B3B4E3F0185256CC2000E39E2.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA414NW

## ADs that name it (0)

None.

## Approved models (9)

- Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172H (USAF T-41A) ([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)

- March 15, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/98/d9/98d97ee32f731190510c573bd66b3787a5128cebb97f72ed5691fd027e53c601)

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