# STC SE02881AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: AERO Aviation Company, United States - Description: STC for the conversion of Teledyne Continental Motors (TCM) Models IO-520-B, -BA or -BB to AvPower Model IO-550-B-AP which has the same ratings and limitations as TCM Model IO-550-B, or the conversion of TCM Model IO-520-C or -CB to AvPower Model IO-550-C-AP which has the same ratings and limitations as TCM Model IO-550-C. Conversion of the Models IO-520-B, -BA, or -BB to the Model IO-550-B-AP shall be performed in accordance with AvPower Report AP1004-3 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-6 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. Conversion of the Models IO-520-C or -CB to the Model IO-550-C-AP shall be performed in accordance with AvPower Report AP1004-4 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-7 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. - Applied: March 3, 2003 - Status date: April 5, 2005 - Product: Engine - Certification basis: Part 21, Part 33 - Data sheets: [TCDS E5CE](https://openairdocs.org/tcds/E5CE) - Certificate PDF: https://openairdocs.org/files/sha256/f7/ec/f7ecac23e5f36dbb398ba6db2c395ba90b6b8bc86cb6ad877a78ad0995f54a4d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B766E3E0DFAB64C886256FF7005FFA5E.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SE02881AT ## ADs that name it (0) None. ## Approved models (5) - Teledyne Continental Motors IO-520-B ([TCDS E5CE](https://openairdocs.org/tcds/E5CE)) - Teledyne Continental Motors IO-520-BA ([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. FAA FORM 8110-2(10-68) PAGE 1 of 1 PAGES Number SE02881AT This certificate issued to A.E.R.O. Aviation Company 3701 Highway 162 Granite City, IL 62040 Part 33* of the Federal Aviation Regulations. *through Amendment 33-8, effective May 2, 1977. Original Product--Type Certificate Number: E5CE Make: Teledyne Continental Motors Model: IO-520-B, -BA, -BB, -C, or -CB Description of Type Design Change: STC for the conversion of Teledyne Continental Motors (TCM) Models IO-520-B, -BA or - BB to AvPower Model IO-550-B-AP which has the same ratings and limitations as TCM Model IO-550-B, or the conversion of TCM Model IO-520-C or -CB to AvPower Model IO-550-C-AP which has the same ratings and limitations as TCM Model IO-550- C. Conversion of the Models IO-520-B, -BA, or -BB to the Model IO-550-B-AP shall be performed in accordance with AvPower Report AP1004-3 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-6 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. Conversion of the Models IO-520-C or -CB to the Model IO- 550-C-AP shall be performed in accordance with AvPower Report AP1004-4 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-7 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. Limitations and Conditions: 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 effect upon the airworthiness of that engine/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. The Model IO-550-B-AP shall be installed, operated and maintained in accordance with AvPower Report AP1004-9, Instructions for Installation, Operation, Maintenance and Continued Airworthiness, Revision B dated March 26, 2004, or later FAA approved revision. The Model IO-550-C-AP shall be installed, operated and maintained in accordance with AvPower Report AP1004-10, Instructions for Installation, Operation, Maintenance and Continued Airworthiness, Revision B dated March 26, 2004, or later FAA approved revision. Date of application: March 03, 2003 Date of issuance: June 23, 2004 Date reissued: April 05, 2005 ( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office (Title) ## Every issue (1) - April 5, 2005: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f7/ec/f7ecac23e5f36dbb398ba6db2c395ba90b6b8bc86cb6ad877a78ad0995f54a4d) --- 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.