# STC SA552WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: McKinnon Enterprises Inc, United States
- Description: Installed Stewart-Warner 47,000 BTU Heater
- Applied: March 1, 1963
- Status date: November 12, 1963
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS TC 654](https://openairdocs.org/tcds/TC%20654)
- Certificate PDF: https://openairdocs.org/files/sha256/07/ab/07ab80f8c1594a3ed895dcf14a297931a7ad9b71f2c741c80e5368c600d550a0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1F20086EFF2F956286257A2B00675142.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA552WE

## ADs that name it (0)

None.

## Approved models (1)

- Grumman American Aviation Corporation G-21A (Army OA-9; Navy JRF-1; -2; -3; -4; -5; and -6B) ([TCDS TC 654](https://openairdocs.org/tcds/TC%20654))

## What the certificate says

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

## Every issue (1)

- November 12, 1963: Issued, Current. [certificate](https://openairdocs.org/files/sha256/07/ab/07ab80f8c1594a3ed895dcf14a297931a7ad9b71f2c741c80e5368c600d550a0)

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