# STC SA663SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Northwest Airlines Inc., United States
- Description: Installation of Bendix brushless A.C. generator and voltage regulator as a replacement to the Westinghouse deicing generator and voltage regulator
- Applied: May 17, 1963
- Status date: November 14, 1986
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS 7A1](https://openairdocs.org/tcds/7A1)
- Certificate PDF: https://openairdocs.org/files/sha256/21/64/21642861ffec78c2e9a614081dedf9415bc60987fd0192d64857ab6a55163cae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100686124820260722180132.0001
- DRS record last changed: July 22, 2026
- Page: https://openairdocs.org/stc/SA663SW

## ADs that name it (0)

None.

## Approved models (1)

- Maryland Air Industries Inc. F-27A ([TCDS 7A1](https://openairdocs.org/tcds/7A1))

## What the certificate says

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

## Every issue (1)

- November 14, 1986: Issued, Current. [certificate](https://openairdocs.org/files/sha256/21/64/21642861ffec78c2e9a614081dedf9415bc60987fd0192d64857ab6a55163cae)

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