# STC SA4-152

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Staggerwing Museum Foundation Inc., United States
- Description: Two Model 940 Stewart-Warner heaters, install one in each wheel well.
- Applied: October 1, 1956
- Status date: October 6, 2006
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765)
- Certificate PDF: https://openairdocs.org/files/sha256/91/97/91977374915e206f27f1f683cd8edda6ccaf943817682e43fd2807fc70cc1452
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/489ED2A462BE71F4862574F10072448A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-152

## ADs that name it (0)

None.

## Approved models (5)

- Hawker Beechcraft Corporation C-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Hawker Beechcraft Corporation C-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Hawker Beechcraft Corporation D18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Hawker Beechcraft Corporation TC-45G ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Hawker Beechcraft Corporation TC-45H ([TCDS A-765](https://openairdocs.org/tcds/A-765))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

This certificate issued to: Staggerwing Museum Foundation, Inc.

560 Old Shelbyville Hwy Tullahoma, TN 37388

Part * of the Civil Air Regulations. * CAR 03 effective 11/13/45.

Original Product - Type Certificate Number : 757 Make : Beech Model : D18S, C-45G/H and TC-45G/H

Installation of two (2) Model 940 Stewart-Warner heaters, install one (1) in each wheel well, in accordance with Airline Training, Inc. Drawing No. 7825D, or 7825E, 7825G, or 7825I.

Airworthiness compatibility of this STC with all other major changes to the standard original model(s) shown above should be confirmed prior to installation of this STC. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date reissued : May 22, 1967; August 15, 1968;

February 26, 1990; October 6, 2006 Date amended : November 20, 1961

Original signed by Robert D. Adamson

( Signature) Robert D. Adamson Program Manager Wichita Aircraft Certification Office (Title) Date of application : October 1, 1956 Date of issuance : January 2, 1957

## Every issue (1)

- October 6, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/91/97/91977374915e206f27f1f683cd8edda6ccaf943817682e43fd2807fc70cc1452)

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