# STC SA307NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Mace, Kenneth, United States
- Description: Installation of a 1968 Cessna Model 172 airframe (forward of Station 27) and engine cowling;l Cessna Model 172 AVCON conversion power-pac consisting of a Lycoming O-360-A1A engine, Cessna 172 engine mount (P/N 0551017-1), Hartzell HC-C2YK-1F/7666A-2 propeller, carburetor air box and nose cowling; and a Cessna Model 172 baggage door assembly
- Applied: December 3, 1975
- Status date: May 5, 1979
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799)
- Certificate PDF: https://openairdocs.org/files/sha256/bd/a2/bda278a780aaef9086057b2506a940bb42da931c4f4817ac27965d5574efb516
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ACD6CBB0747EF2AC86257ADA007078B3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA307NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799))

## 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: SA307N8 This certificate issued to: Kenneth G. Mace Purt 3 of the Civil Air

•Keyulalind, dated November 1, 1949 as amended by 3-1 through 3-2.

Original Product -Iype bertificate Number: A-799 Make: Cessna Misted: 170B Jescriplin/ Type Jesiy» thange: Installation of a 1968 Cessna Model 172 airframe (forward of Station 27) and engine cowling; Cessna Model 172 AVCON conversion power-pac consisting of a Lycoming 0-360-A1A engine, Cessna 172 engine mount (P/N 0551017-1), Hartzell HC-C2YK-1F/7666A-2 propeller, carburetor air box and nose cowling; and a Cessna Model 172 baggage door assembly in accordance with photographs 1 through 6.

Similalins and undile Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Cessna Model 170B, Serial Number 20771 only. A copy of this Certificate and FAA Approved Airplane Flight Manual Supplement shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: December 3, 1975 Date Reissued:

Date of Issuance: May 27, 1976 Nah amendad: May 5, 1979 FEDERAL AVIATION hado C Sihra (Signature ) TOMINISTRA Chief, Engineering and Manufacturing Branch ('Title)

## Every issue (1)

- May 5, 1979: Amended, Current. [certificate](https://openairdocs.org/files/sha256/bd/a2/bda278a780aaef9086057b2506a940bb42da931c4f4817ac27965d5574efb516)

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