# STC SA266SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: AirCorps Aviation, United States
- Description: Installation of engine mount P/N M1 for Pratt & Whitney R-985 or R-1340 engine installation.
- Applied: May 8, 1963
- Status date: May 27, 2025
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS A-743](https://openairdocs.org/tcds/A-743)
- Certificate PDF: https://openairdocs.org/files/sha256/81/88/81889e5eb5ac914ca47dabc88fb53f804dd4416e3e28b13d479d4f2c12d67da8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130543937520250529155325.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA266SW

## ADs that name it (0)

None.

## Approved models (12)

- The Boeing Company 75 (Army PT-13) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company A75 (Army PT-13A; -13B; -13C) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company A75J1 (Army PT-18) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company A75L3 ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company A75L300 ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company A75N1 (Army PT-17; -17A; Navy N2S-1; -4) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company B75 (Navy N2S-5) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company B75N1 (Navy N2S-3) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company D75N1 (Army PT-27) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company E75 (Army PT-13D; Navy N2S-5; PT-13D/N2S-5) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company E75N1 (Army PT-13D; Navy N2S-5; PT-13D/N2S-5) ([TCDS A-743](https://openairdocs.org/tcds/A-743))
- The Boeing Company IB75A ([TCDS A-743](https://openairdocs.org/tcds/A-743))

## 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.

SA266SW AirCorps Aviation 1259 Exchange Ave. SE Bemidji, MN 56601 Part 4a the Civil Air Regulations A-743 Boeing 75 Series NOTE: This STC is for structural approval of engine mount only and does not include the installation of engines.

The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

05/08/1963 08/24/1964 10/22/1965 07/27/1976 09/23/1963 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of engine mount P/N M1 for Pratt and Whitney R-985 or R-1340 engine installation.

FAA 8110-2 ( 10/24) Page 2 of __

SA266SW 05/27/2025 3

SA266SW 05/27/2025 Dates Reissued:

11/21/2024; 01/28/2025; 05/27/2025

-END- 3 3

## Every issue (2)

- May 27, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/81/88/81889e5eb5ac914ca47dabc88fb53f804dd4416e3e28b13d479d4f2c12d67da8)
- July 27, 1976: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/33/02/3302af01e7c57f1de4acf79a05f93f4abb00ce75d43215e2178b64a60291bd0f)

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