# STC SA693NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Northwest Avionics Inc., United States
- Description: Install a Foster Airdata RNAV 511 area navigation system with 51 ASA (Alpha) or 51 DSA (Delta) steering adapters
- Applied: October 30, 1978
- Status date: January 3, 1979
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13)
- Certificate PDF: https://openairdocs.org/files/sha256/3f/14/3f148d1fe14281e813b9cfbd32083f8fca3a79a519c24b48181127188733368a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BF854D1A418259C086257A4400651D45.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA693NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 182P ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

## What the certificate says

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

## Every issue (1)

- January 3, 1979: Issued, Current. [certificate](https://openairdocs.org/files/sha256/3f/14/3f148d1fe14281e813b9cfbd32083f8fca3a79a519c24b48181127188733368a)

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