# STC SA939NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Steven E Soper, United States
- Description: Installation of Hartzell HC-C2YK-4AF/FC7666A-40 propeller, fiberglass engine cowl, crossover exhaust system, and upper wing cabane fairing
- Applied: May 1, 1980
- Status date: May 12, 1980
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A8SO](https://openairdocs.org/tcds/A8SO)
- Certificate PDF: https://openairdocs.org/files/sha256/28/e4/28e499c8a648db2e4ca5f795e9d32b450e78a4e7b92ab3bd680005c82d05351f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5CE08B7BAD8AAB3286257A3F005758B1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA939NW

## ADs that name it (0)

None.

## Approved models (1)

- Aviat Aircraft Inc S-2A ([TCDS A8SO](https://openairdocs.org/tcds/A8SO))

## 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 5A059NW This certificate issued to: . Steven E. Soper Purt 23 of the Federal Aviation Hugulations., and amendments 1 through 6.

Original Product -Type Irertificate Lumber: A850 Make: Pitts Model: S-2A Jescriplin / Type esign thange: Installation of Hartzell HC-C2YK-4AF/FC7666A-40 propeller, fiberglass engine cowl, crossover exhaust system, and upper wing cabane fairing in accordance with Steven E. Soper photographs 1 and 2.

NOTE: This modification includes the removal of the front oil cooler and the relocation of the rear cooler.

NO FAA Approved Airplane Flight Manual Supplement required.

Jimilatuns andlunditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Pitts S-2A, Serial Number 2082 only. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: May 1, 1980 Tute missued:

Date of Issuance: . May 12, 1980 Date Amended:

FEDERAL AVIATION Chatea Caditivades (Signature ) TOMINIST RATO Chief, Engineering and Manufacturing Branch (Title) 47 FAA FORM 8110-2 (10-68)

## Every issue (1)

- May 12, 1980: Issued, Current. [certificate](https://openairdocs.org/files/sha256/28/e4/28e499c8a648db2e4ca5f795e9d32b450e78a4e7b92ab3bd680005c82d05351f)

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