# STC SA04477AT - Type: Supplemental type certificate - Status: Current, Issued - Holder: Continental Aerospace Technologies Inc, United States - Description: Installation of Continental Aerospace Technologies, Inc. IO-370-DA3A engine - Applied: May 13, 2019 - Status date: July 21, 2020 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) - Certificate PDF: https://openairdocs.org/files/sha256/35/23/3523d1df400d6be66b819d0a365275067455cda77fb5d4d9fa196aa64a6010ac - Approved model list and other attachments: [SA04477AT_AML.pdf](https://openairdocs.org/files/sha256/14/b7/14b72cfd8a21512415fc7eb26e350b97d8c5a935e4c49fbbb2b4deede82f9012) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A2C68A39B17E860A862585D9003C6CCF.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04477AT ## ADs that name it (0) None. ## Approved models (2) - Textron Aviation Inc. 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) ## 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. FAA Form 8110-2 (5/14) Page 1 of 3 Number: SA04477AT This certificate issued to: Continental Aerospace Technologies, Inc. 2039 South Broad Street Mobile, Alabama 36615 Part 23 of the Federal Aviation Regulations. Original Product – Type Certificate Number: See AML Make: FAA Approved Model List (AML) Model: See AML Rev. IR or later FAA approved revision for a list of approved aircraft models Installation of Continental Aerospace Technologies, Inc. IO-370-DA3A engine in accordance with FAA Approved Model List (AML) No. SA04477AT and Installation Instructions IMC172RSIO370, Rev. ~, dat ed July 2020, or later FAA approved revision. Type design data is as detailed in the Engine Installation Kit Bill-Of-Materials Part Number STC172RSI0370, Revision A or later FAA approved revision. 1. Approval of this change in type design applies only to the approved aircraft models listed in the AML Rev IR or later approved revision. 2. 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 on Page 3 for additional Limitations and Conditions) Date of Application: May 13, 2019 Date Reissued: Date of Issuance: July 21, 2020 Date Amended: By Direction of the Administrator Signature Title: (for) Christina M. Underwood Manager, Atlanta ACO Branch United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. FAA Form 8110-2 (5/14) Page 2 of 3 To (Name and address of transferee) From (Name and address of grantor) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA04477AT (Continuation Sheet) Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the ST C holder. FAA Form 8110-2 (5/14) Page 3 of 3 3. The installer must determine whether this design change is compatible with previously approved modifications. This approval should not be extended to other aircraft of this model 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 airplane. 4. A copy of this Certificate and the FAA approved Flight Manual Supplement, AFMSC172RSIO370, Rev. ~, dated July 2020, or later FAA approved revision, must be maintained as part of the permanent records of the modified aircraft. ------------------------------------END------------------------------------ ### SA04477AT_AML.pdf FAA - Approved Model List (AML) SA04477AT Installation of Continental IO-370-DA3A ISSUE DATE: July 21, 2020 Item Make Model/ Series Cert Basis/ Amendment/ Category TCDS No Master Drawing List/Flight Manual Supplement Instructions for Continuous Airworthiness MFG P/N Model Specific Notes Approval/Amendment DateDocument Number Date 1 Textron Aviation Inc. (Cessna) 172R180 14 CFR Part 23 (See Note 1) 3A12 Rev 85 IMC172RSIO370 7/10/2020, Rev: New or later FAA approved revision Kit STC172RSI03 70, Revision A or later FAA approved revision. 51 Non-sequential Serial Numbers as detailed in IMC172RSIO370, Rev New, dated 7/10/2020 or latest FAA approved revision only AFMSC172RSIO370 7/20/2020, Rev: New or later FAA approved revision AMMSC172RSIO370 7/10/2020, Rev: or later FAA approved revision 2 Textron Aviation Inc. (Cessna) 172S 14 CFR Part 23 (See Note 1) 3A12 Rev 85 IMC172RSIO370 7/10/2020, Rev: New or later FAA approved revision Kit STC172RSI03 70, Revision A or later FAA approved revision. Serial Numbers 172S8001 and subsequent AFMSC172RSIO370 7/20/2020, Rev: New or later FAA approved revision AMMSC172RSIO370 7/10/2020, Rev: or laterFAA approved revision NOTES: 1. Certification basis* for STC SA04477AT for Textron Aviation Inc. (Cessna) 172R180 and 172S is Part 23 of the Federal Aviation Regulations effective February 1, 1965, as amended by 23-1 through 23-6, except as follows: 14 CFR 23.423; 23.611; 23.619; 23.623; 23.689; 23.775; 23.871; 23.1323; and 23.1563 as amended by Amendment 23-7. 14 CFR 23.807 and 23.1524 as amended by Amendment 23-10. 14 CFR 23.507; 23.771; 23.853(a), (b) and (c); and 23.1365 as amended by Amendment 23-14. 14 CFR 23.951 as amended by Amendment 23-15. 14 CFR 23.607; 23.675; 23.685; 23.733; 23.787; 23.1309 and 23.1322 as amended by Amendment 23-17. 14 CFR 23.1301 as amended by Amendment 23-20. 14 CFR 23.1353; and 23.1559 as amended by Amendment 23-21. 14 CFR 23.603; 23.605; 23.613; 23.1329 and 23.1545 as amended by Amendment 23-23. 14 CFR 23.441 and 23.1549 as amended by Amendment 23-28. 14 CFR 23.779 and 23.781 as amended by Amendment 23-33. 14 CFR 23.1; 23.51 and 23.561 as amended by Amendment 23-34. 07/21/2020 07/21/2020 14 CFR 23.301; 23.331; 23.351; 23.427; 23.677; 23.701; 23.735; and 23.831 as amended by Amendment 23-42. 14 CFR 23.961; 23.1093; 23.1143(g); 23.1147(b); 23.1303; 23.1357; 23.1361 and 23.1385 as amended by Amendment 23-43. 14 CFR 23.562(a); 23.562(b)2; 23.562(c)1; 23.562(c)2; 23.562(c)3; and 23.562(c)4 as amended by Amendment 23-44. 14 CFR 23.33; 23.53; 23.305; 23.321; 23.485; 23.621; 23.655 and 23.731 as amended by Amendment 23-45. *This certification basis and exceptions is identical to the original certification basis and exceptions for both Cessna 172R180 and 172S as detailed in TCDS 3A12. FAA Approved: Christina Underwood, Manager Atlanta Aircraft Certification Office **CHRISTINA M** UNDERWOOD Digitally signed by CHRISTINA M UNDERWOOD Date: 2020.07.21 12:30:42 -04'00' ## Every issue (1) - July 21, 2020: Issued, Current. [certificate](https://openairdocs.org/files/sha256/35/23/3523d1df400d6be66b819d0a365275067455cda77fb5d4d9fa196aa64a6010ac), [SA04477AT_AML.pdf](https://openairdocs.org/files/sha256/14/b7/14b72cfd8a21512415fc7eb26e350b97d8c5a935e4c49fbbb2b4deede82f9012) --- 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.