# STC SA4-95

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: John P. Warren, United States
- Description: Installation of a Lycoming O-235-C1 or O-235-C2C engine
- Applied: July 7, 1956
- Status date: March 18, 2019
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-768](https://openairdocs.org/tcds/A-768)
- Certificate PDF: https://openairdocs.org/files/sha256/c7/af/c7afa02058ea34e9696e54bedb739ff07995549d97df5464fbb468f907fccc32
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/47EB002ED32D045E8625843F006A7DE9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-95

## ADs that name it (1)

- [AD 62-24-03](https://openairdocs.org/ad/62-24-03): Cabin Heat System · Lycoming O-235-C1, O-235-C2C, O-290-D, O-290-D2, O-320 engine (Luscombe STC SA4-173 or 5 others). Effective Nov 21, 1962. Named in the applicability

## Approved models (2)

- Cessna Aircraft Company 120 ([TCDS A-768](https://openairdocs.org/tcds/A-768))
- Cessna Aircraft Company 140 ([TCDS A-768](https://openairdocs.org/tcds/A-768))

## 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.

Part 4a of the Civil Air Regulations

Installation of a Lycoming O-235-C1 or O-235-C2C engine, in accordance with Installation Instructions and McKenzie Flying Service Drawing No. L149-0600-244, Sheets 1 and 2, or later FAA approved revisions.

NOTE: This modification also includes the option of installing a Gulfstream American AA-1 exhaust system assembly (Part No. 504002-501) as per Instructions Item No. 27.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined that the relationship 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 must 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.

John P. Warren 1600 Ormond Road White Lake, MI 48383 A-768 Make: Cessna Model: 120 and 140

Date of application: July 7, 1956

Date of issuance: August 27, 1956 Date reissued: 9/27/89; 4/8/91; 4/4/96; 3/1/02;

11/19/12; 3/18/19

Date amended: 10/ 15/62; 3/25/75; 3/24/78; 8/27/79; 3/1 / 02

By direction of the Administrator Original Signed By:

Monica L. Nemecek

(Signature)

Monica L. Nemecek, Manager Airframe & Administrative Services Section Chicago ACO Branch

(Title)

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee)

(Number and street)

(City, State, and Zip code)

from (Name of grantor) (Print or type)

(Address of grantor)

(Number and street)

(City, State, and Zip code)

Signature of grantor (In ink):

## Every issue (3)

- March 18, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c7/af/c7afa02058ea34e9696e54bedb739ff07995549d97df5464fbb468f907fccc32)
- November 19, 2012: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ae/4b/ae4ba82d7560200632c7d5dff86cb686e22f1f1b8c9082c683fad1d6c7c29f3d)
- March 1, 2002: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/a3/f2/a3f2ace78316bff6dafc742fe5a06f2f3307406aa3dd6eeae4d4d41e939e7bd6)

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