# STC SA831CE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Northwest Airlines Inc., United States
- Description: Installation of Aerotherm stretcher model 1003
- Applied: December 30, 1971
- Status date: March 7, 1971
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/42/ee/42eee0d56e7b9670cf132c18852dd0c2b9a53088ab89e824949906989d09daf2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119876456720260722203123.0001
- DRS record last changed: July 22, 2026
- Page: https://openairdocs.org/stc/SA831CE

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA831CE This certificate issued to: Northwest Airlines, Inc.

Minneapolis - St. Paul International Airport St. Paul, Minnesota 55111 Certifies that the change in the type design for the felling product with the limitations and conditions therefor as specifed hereon meets the winerrhiness requirements s/ Purl 4b of'the Civil Air Regulations.

Original Product -Type Certificate Number: 4A26 Make: Boeing Mertel: 707-351B, -351C Description of Type Design Change:

Installation of Acrotherm stretcher Model 1003 in accordance with a stamped "FAA Approved" copy of NWA Engineering Order No. 9-25-33111 and subordinate data.

This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the inter-relationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

CARRAN, Chief (Title) Any alteration of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both

## Every issue (1)

- March 7, 1971: Issued, Current. [certificate](https://openairdocs.org/files/sha256/42/ee/42eee0d56e7b9670cf132c18852dd0c2b9a53088ab89e824949906989d09daf2)

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