# STC SA943NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Pacific Propeller International LLC, United States
- Description: Installation of Pacific Propellers EAC-12D40-425/AG-100-4S or EAC-22D40/AG-200-4S propeller assemblies using P&W 600 hp R-1340-S1H series engines.
- Applied: March 20, 1980
- Status date: March 25, 2004
- Product: Aircraft, Single-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A9SW](https://openairdocs.org/tcds/A9SW)
- Certificate PDF: https://openairdocs.org/files/sha256/75/21/7521f3f41d714ad2e78243d353e17dc693866123c8d2157ab433c0c765449ddb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8E4AE3487620A51A86256E7B0064559D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA943NW

## ADs that name it (0)

None.

## Approved models (1)

- Air Tractor Inc. AT-301 ([TCDS A9SW](https://openairdocs.org/tcds/A9SW))

## 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.

Number SA943NW This certificate, issued to: Pacific Propeller International LLC 5802 South 228th Street Kent, WA 98032-1810

Part 21.25 and 23 of the Federal Aviation Regulations.

Original Product Type Certificate Number: A9SW Make: Air Tractor Model: AT-301

Description of the Type Design Change: Installation of EAC-12D40-425/AG-100-4S or 22D40/AG- 200-4S propeller assemblies using Pratt & Whitney 600 Hp R-1340-S1H1 or S3H1 series engines in accordance with Pacific Propeller, Inc. Master Drawing Lists 76023 and 76024 respectively.

Limitations and Conditions: Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

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 of application: March 20, 1980 Date reissued: March 25, 2004 Date of issuance: May 29, 1980 Date amended: March 25, 2004

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

**FAA FORM 8110-2(10-68**

## Every issue (1)

- March 25, 2004: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/75/21/7521f3f41d714ad2e78243d353e17dc693866123c8d2157ab433c0c765449ddb)

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