# STC SE10746SC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Conversion of Teledyne Continental Motors (TCM) models IO-520-B, -BA, -BB to RAM model IO-550-B-RA engine, or conversion of TCM models IO-520-C, -CB to RAM model IO-550-C-RA engine
- Applied: November 7, 2006
- Status date: February 15, 2013
- Product: Engine
- Certification basis: Part 21, Part 33
- Data sheets: [TCDS E5CE](https://openairdocs.org/tcds/E5CE)
- Certificate PDF: https://openairdocs.org/files/sha256/a1/0e/a10e03b2be87ebf11f9e7828071562234ed3e14d182e9a0d3a56ee73e637259d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/88784164B3E0152B86257B49006415EC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE10746SC-D

## ADs that name it (0)

None.

## Approved models (5)

- Continental Motors IO-520-BA ([TCDS E5CE](https://openairdocs.org/tcds/E5CE))
- Teledyne Continental Motors IO-520-B ([TCDS E5CE](https://openairdocs.org/tcds/E5CE))
- Teledyne Continental Motors IO-520-BB ([TCDS E5CE](https://openairdocs.org/tcds/E5CE))
- Teledyne Continental Motors IO-520-C ([TCDS E5CE](https://openairdocs.org/tcds/E5CE))
- Teledyne Continental Motors IO-520-CB ([TCDS E5CE](https://openairdocs.org/tcds/E5CE))

## 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 33 of the Federal Aviation Regulations.

Description of Type Design Change: Conversion of Teledyne Continental Motors (TCM) models IO- 520-B, -BA, -BB to RAM model IO-550-B-RA engine, or conversion of TCM models IO-520-C, -CB to RAM model IO-550-C-RA engine in accordance with RAM Master Drawing List 2691, Revision C dated August 20, 2012, or later FAA approved revision.

Limitations and Conditions: The RAM model IO-550-B-RA engine is identical to and has the same ratings, limitations, and installation interfaces as TCM model IO-550-B engine. The RAM model IO-550-C-RA is identical to and has the same ratings, limitations, and installation interfaces as TCM model IO-550-C engine. The Instructions for Continued Airworthiness are contained in RAM Document number 2692, Revision A dated August 20, 2012, or later FAA approved revision.

RAM Aircraft, Limited Partnership 7505 Karl May Drive Waco, TX 76708 E5CE Make : Teledyne Continental Motors Model : IO-520-B, -BA, -BB, -C, or -CB Date of application : November 07, 2006

Date of issuance : November 20, 2007

Date reissued : March 10, 2008

Date amended : February 15, 2013

( Signature) Terry L. Bowden ODA Administrator, ODA-700100-SW RAM Aircraft LP, Waco, Texas

( Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

Number SE10746SC-D Date of Issuance: November 20, 2007 Amended: February 15, 2013

This approval should not be extended to other engines of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse affect on the airworthiness of that engine or 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.

## Every issue (1)

- February 15, 2013: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a1/0e/a10e03b2be87ebf11f9e7828071562234ed3e14d182e9a0d3a56ee73e637259d)

---
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.