# STC SA04466NY - Type: Supplemental type certificate - Status: Current, Issued - Holder: ACC Columbia Jet Service GmbH, Germany - Description: Installation of an externally mounted exhaust silencer system - Applied: August 7, 2019 - Status date: March 8, 2022 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10), [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS 3A17](https://openairdocs.org/tcds/3A17), [TCDS A4EU](https://openairdocs.org/tcds/A4EU) - Certificate PDF: https://openairdocs.org/files/sha256/37/c7/37c705c7c5fdf24268aaa6dff447a4a31b4fef1b4a8901962e8b822a57316d2f - Approved model list and other attachments: [AML SA04466NY.pdf](https://openairdocs.org/files/sha256/45/1c/451cc62bea72caaafd3210cd30f1f5e5b6989c5cbf547f0e36837e6e65018194) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/08DFE96C029DCEDF8625880000565095.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA04466NY ## ADs that name it (0) None. ## Approved models (14) - Textron Aviation Inc. 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172Q ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 172RG ([TCDS 3A17](https://openairdocs.org/tcds/3A17)) - Textron Aviation Inc. 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12)) - Textron Aviation Inc. 310A ([TCDS 3A10](https://openairdocs.org/tcds/3A10)) - Textron Aviation Inc. F172L ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Textron Aviation Inc. F172M ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Textron Aviation Inc. F172N ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) - Textron Aviation Inc. F172P ([TCDS A4EU](https://openairdocs.org/tcds/A4EU)) ## 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. IMPORT SA04466NY ACC COLUMBIA Jet Service GmbH 30855 LANGENHAGEN GERMANY Part 23 * See attached FAA Approved Model List (AML) No. SA04466NY * See FAA Approved Model List No. SA04466NY * See FAA Approved Model List No. SA04466NY 1. Installation of an externally mounted exhaust silencer system must be done in accordance with the Master Document List & Installation Instructions as shown on AML No. SA04466NY. 2. Operation must be done in accordance with the Airplane Flight Manual Supplement as shown on AML No. SA04466NY. 3. Maintenance must be done in accordance with the Instructions for Continued Airworthiness as shown on AML No. SA04466NY. 1. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. (Limitations and Conditions Continued on Page 3 of 3) August 7, 2019 March 8, 2022 Anthony E. Gallo Manager, International Validation Branch (AIR-730) Compliance & Airworthiness Division Aircraft Certification Service (AIR) 3 Title 14 Code of Federal Regulations **IMPORT SA04466NY SA04466NY 3** IMPORT SA04466NY Date of Issuance: March 8, 2022 2. The installer must determine whether this design change is compatible with previously approved modifications. 3. This STC is applicable to all serial numbers for the Makes and Models as shown on AML No. SA04466NY. 4. Textron Aviation Inc. model 172N aircraft may be optionally equipped with Lycoming model O-360-A4M engine installed in accordance with FAA STC No. SA703GL. 5. The aircraft must be operated in accordance with the "Limitations" section of the Airplane Flight Manual Supplement as shown on AML No. SA04466NY. ----------END---------- 3 3 ### AML SA04466NY.pdf Page 1 of 1 FAA APPROVED MODEL LIST (AML) NO. SA04466NY FOR Installation of an externally mounted exhaust silencer system Issue Date: March 8, 2022 Amendment Date: N/A Item Make Model TCDS Certification Basis Master Document List / Installation Instructions* Instructions For Continued Airworthiness** Airplane Flight Manual Supplement* AML Issue Date AML Amended Date 1 Textron Aviation Inc. 172K, 172L, 172M, 172N, 172P, 172Q, 172R, 172S 3A12 Per TCDS 3A12 Master Document List: MDOCL_2051129_rev1 dated September 6, 2021 Installation Instructions: II_2051129_rev1 dated September 3, 2021 Maintenance Manual Supplement: MMS_2051129_rev1 dated September 3, 2021 Flight Manual Supplement: SPOH_2051129_rev0_ 20190208 dated May 13, 2019 March 8, 2022 N/A 2 Textron Aviation Inc. 172RG 3A17 Per TCDS 3A17 March 8, 2022 N/A 3 Textron Aviation Inc. F172L, F172M, F172N, F172P A4EU Per TCDS A4EU March 8, 2022 N/A * Or later European Union Aviation Safety Agency (EASA) approved revisions. ** Or later EASA accepted revisions. FAA Approved: ________________________________________ _ Anthony E. Gallo Manager, International Validation Branch (AIR -730) Compliance & Airworthiness Division Aircraft Certification Service (AIR) ## Every issue (1) - March 8, 2022: Issued, Current. [certificate](https://openairdocs.org/files/sha256/37/c7/37c705c7c5fdf24268aaa6dff447a4a31b4fef1b4a8901962e8b822a57316d2f), [AML SA04466NY.pdf](https://openairdocs.org/files/sha256/45/1c/451cc62bea72caaafd3210cd30f1f5e5b6989c5cbf547f0e36837e6e65018194) --- 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.