# STC SA1-275

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Copper River Airmotive LLC, United States
- Description: Lycoming O-320 150 hp engine and Sensenich M74DM propeller, Piper PA-22-150 engine baffles, Harrison AP13SJ03-01 oil cooler.
- Applied: September 15, 1958
- Status date: February 10, 2006
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A6](https://openairdocs.org/tcds/1A6)
- Certificate PDF: https://openairdocs.org/files/sha256/d1/ec/d1ecfb17b9a8a4fe210d7f1280e953b2ebdc8a06653f2998feca3577bfe4a73b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8F696923923807CB862571480070D632.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-275

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))

## 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 SA1-275 This certificate issued to Copper River Airmotive, LLC HC 60, Box 251B Copper Center, AK 99573

Part 3 of the Civil Air Regulations.

Original Product -- Type Certificate Number: 1A6 Make : Piper

Model : PA–22

Installation of a Lycoming 0-320, 150 hp engine, Sensenich M-74DM propeller; PA-22 “150” engine baffles, Harrison #AP13SJ03- 01 oil cooler in accordance with Aero-Marine Drawings 201 and 202, and Instruction Sheets 1, 2, 201A and 202A.

1. Susquehanna Aero-Marine Aircraft Flight Manual Supplement, dated 11/6/58, is required with this installation.

2. Compatibility of this design change with previously approved modifications must be determined by the installer.

3. 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 : September 15, 1958

Date of issuance : November 13, 1958 Date reissued : August 6, 1990, November 3, 1995, November 24, 2000, February 10, 2006

( Signature) Anthony Socias Manager, New York Aircraft Certification Office

(Title) (transferred to Anchorage ACO)

## Every issue (1)

- February 10, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d1/ec/d1ecfb17b9a8a4fe210d7f1280e953b2ebdc8a06653f2998feca3577bfe4a73b)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.