# STC SA1278NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Jerry Unruh, United States
- Description: Installation of a Continental O-470-R engine, a McCauley 2A34C66/90AT-8 propeller, and a modified cowl
- Applied: March 18, 1981
- Status date: July 7, 1981
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13)
- Certificate PDF: https://openairdocs.org/files/sha256/8d/12/8d12d311e1938c8b97d3e20001a91f80cc290fdc8f514fe0a0872ee252969ff6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0E965671381A962D86257A3A006199C9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1278NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 182B ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

## 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 SA1278NW Tis cortificate, isera le Jerry Unruh Furt Civil Air Tuqulatied: • November 1, 1949, as amended by 3-1 through 3-22.

Original Product - Type bertificate. Lumber: ЗА13 Make: Cessna Arted: 1828 2As46/sdAF28 Sopier, and a modified comt in accordance with verry Unruh photo- Installation of a Continental 0-470-R engine, a McCauley graphs 1 through 3.

Imiulin and funditia: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limitec to the installation in Cessna 182B, Serial Number 52211 only. SA1278NW shall be maintained as part of the permanent recores for the modified aircraft. A copy of this Certificate and Addendum No.

I ate st upplication: March 18, 1981 Date of Issuance: . July 7, 1981 Date Amended:

FEDERAL AVIATION By direction of the eldeministrais sealen Signature *MINISTRATION Chief, Seattle Area Aircraft Certification Office

FAA FoR 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) July 7, 1981 Number SA1278Nh Supplemental Type Certificate ADDENDUM NO. SA1Z78NV The conditions and limitations of Type Certificate Data Sheet Number 3A13 apply except where superseded by the following:

Supplemental Type Certificate Data Sheet, which is part of STC SA1278hN, prescribes the conditions and limitations under which the STC was issued meets the airworthiness requirements of the Civil Air Regulations.

Supplemental Type Certificate HOLDER: Jerry Unruh CESSNA 182B (LANDPLANE- NORMAL CATEGORY) AS MODIFIED BY STC SA1278NW Engine: Continental 0-470-R Engine Limits: 230 Hp @ 2600 rpm Propeller and McCauley 2A34C66/90AT-8 Propeller Limits: Diameter: 88" maximun; 75" minimum 260 Hp @ 2625 rpm No other restrictions

- END -

**FAA FORM 8110-2-1 (10-69)**

**PAGE OF PAGES C FAA AC 73-2651**

## Every issue (1)

- July 7, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8d/12/8d12d311e1938c8b97d3e20001a91f80cc290fdc8f514fe0a0872ee252969ff6)

---
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.