# STC SA547EA

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Thompson's Air, United States
- Description: Installation of Continental O-200-A engine and McCauley 1A100/MCM6952 or 1A101/DCM6952 or Sensenich 69CK propeller.
- Applied: August 1, 1967
- Status date: July 20, 2005
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 5A2](https://openairdocs.org/tcds/5A2), [TCDS A-768](https://openairdocs.org/tcds/A-768)
- Certificate PDF: https://openairdocs.org/files/sha256/0f/2a/0f2a66193dd59f523e916dad71cb412f9a672e095c401d260dea3def3d16b82d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/841B932783F563D386257052004C1622.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA547EA

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 120 ([TCDS A-768](https://openairdocs.org/tcds/A-768))
- The Cessna Aircraft Company 140 ([TCDS A-768](https://openairdocs.org/tcds/A-768))
- The Cessna Aircraft Company 140A ([TCDS 5A2](https://openairdocs.org/tcds/5A2))

## 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.

This Certificate issued to THOMPSON’S AIR 4375 SIX B ROAD ANDERSON, CA 96007 Part 3 & 4a of the Civil Air Regulations. (See Aircraft Specification Nos. 5A2 and A-768 for the complete certification basis).

5A2, A-768

Cessna

140A, 140 and 120 Description of Type Design Change : Installation of C ontinental O-200-A engi ne and M cCauley 1A100/MCM6952 or 1A101/ DCM6952 or Senseni ch 69C K pr opeller per John T. Lucas and M . Davi d Em mett Installation Instructions dated Decem ber 1, 1967, revised March 12, 1980, July 2, 1980, or May 11, 1981, or Thompson’s Air Installation Instructions dated July 8, 2005, or later FAA approved revisions.

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

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. (See continuation sheet page 3)

Date of application : August 1, 1967

Date of issuance : December 5, 1967

Date reissued : October 13, 1999, April 2, 2001, July 15, 2002, October 28, 2002

Date amended : March 12, 1980, July 2, 1980, May 11, 1981, July 20, 2005

( Signature) Manager, Propulsion Branch Los Angeles Aircraft Certification Office (Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

Number SA547EA

Limitations and Conditions: (continued)

For Cessna Model 140A:

1. John T. Lucas and M. David Emmett FAA approve d Airplane Flight Manual Supplement No. 1 dated November 2, 1967, revised March 12, 1980, July 2, 1980, or May 11, 1981, or Thompson’s Air FAA approved Airplane Flight Manual Supplement No. 2 date d July 7, 2005, or later FAA approved revisions are required with this installation.

2. John T. Lucas and M. David Emmett Installation Inst ructions revised March 12, 1980, July 2, 1980, or May 11, 1981, or Thompson’s Air Installation Instructions dated July 8, 2005, or later FAA approved revisions apply.

3. Original issue of John T. Lucas and M. David Emmett AFMS No. 1 and Installation Instructions only eligible for 1A100/MCM6952 propeller.

For Cessna Model 140:

1. John T. Lucas and M. David Emmett FAA approved Ai rplane Flight Manual Supplement No. 1, revised, July 2, 1980, or May 11, 1981, or Thompson’s Air F AA approved Airplane Flight Manual Supplement No. 1 dated July 7, 2005, required with this installation.

2. John T. Lucas and M. David Emmett Installation Inst ructions, revised, July 2, 1980, or May 11, 1981, or Thompson’s Air Installation Instructions dated July 8, 2005, or later FAA approved revisions apply.

For Cessna Model 120:

1. John T. Lucas and M. David Emmett FAA approved Airplane Flight Manual Supplement No. 1 revised May 11, 1981, or Thompson’s Air FAA approved Airplane Flight Manual Supplement No. 1 dated July 7, 2005, or later FAA approved revisions required with this installation.

2. John T. Lucas and M. David Emmett Installation In structions revised May 11, 1981, or Thompson’s Air Installation Instructions dated July 8, 2005, or later FAA approved revisions apply.

The installation of a Sensenich 69 CK propeller with a diameter of 69 to 67.5 inches has been determined to be a nonacoustic change.

-END-

## Every issue (1)

- July 20, 2005: Amended, Current. [certificate](https://openairdocs.org/files/sha256/0f/2a/0f2a66193dd59f523e916dad71cb412f9a672e095c401d260dea3def3d16b82d)

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