# STC SA11854CH - Type: Supplemental type certificate - Status: Current, Issued - Holder: Dakota Cub Aircraft Inc., United States - Description: Installation of modified exhaust system in lieu of original components - Applied: August 10, 2020 - Status date: December 17, 2024 - Product: Aircraft, Small Airplane - Data sheets: [TCDS A-780](https://openairdocs.org/tcds/A-780), [TCDS A-797](https://openairdocs.org/tcds/A-797), [TCDS 1A1](https://openairdocs.org/tcds/1A1), [TCDS 1A2](https://openairdocs.org/tcds/1A2), [TCDS 1A4](https://openairdocs.org/tcds/1A4), [TCDS 1A6](https://openairdocs.org/tcds/1A6) - Certificate PDF: https://openairdocs.org/files/sha256/38/a4/38a42da0aeed205a90524d3dbb38a94f4d2a60ec93ad00836950d202a292a18c - Approved model list and other attachments: [SA11854CH_AML.pdf](https://openairdocs.org/files/sha256/9d/7e/9d7e0574c6fe4e51dc2b0f4402bfe5cb9e2c831daaa3ed49d87f23afe452f87f) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163834612220241220142450.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA11854CH ## ADs that name it (0) None. ## Approved models (37) - FS 2002 Corp. PA-14 ([TCDS A-797](https://openairdocs.org/tcds/A-797)) - FS 2003 Corp. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - FS 2003 Corp. PA-12S ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - Piper Aircraft Inc. PA-16 ([TCDS 1A1](https://openairdocs.org/tcds/1A1)) - Piper Aircraft Inc. PA-16S ([TCDS 1A1](https://openairdocs.org/tcds/1A1)) - Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-125 (Army L-21A) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18A-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18AS-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-105 (Special) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-18S-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-19 (Army L-18C) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-19S ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - Piper Aircraft Inc. PA-20 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-20-115 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-20-135 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-20S ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-20S-115 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-20S-135 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22-108 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22-135 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22S-135 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22S-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Piper Aircraft Inc. PA-22S-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. FEDERAL AVIATION Department of Transportation United States of America Federal Aviation Administration Supplemental Type Certificate Number: SA11854CH This certificate issued to: Dakota Cub Aircraft, Inc. 48473 262nd Street Valley Springs, SD 57068 Part 3 of the Civil Air Regulations. Type Certificate Number: * Original Product Make: * Model: * * See attached FAA Approved Model List (AML) No. SA11854CH for list of approved airplane models and applicable airworthiness regulations. Installation of modified exhaust system assembly in lieu of original components in accordance with installation instructions listed on AML No. SA11854CH. 1. This approval is only applicable to aircraft with Lycoming O-320 series or O-360 series engine installed. 2. The installer must determine whether this design change is compatible with previously approved modifications. 3. A copy of this Certificate and FAA Approved Model List (AML) No. SA11854CH, dated December 17, 2024, or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft. 4. Installation of this approval is a terminating action for Airworthiness Directive Number 68-05-01. 5. 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. Date of Application: 08/10/2020 Date Reissued: Date of Issuance: 12/17/2024 Date Amended: for Paul Nguyen Title: Manager, Central Certification Branch (AIR-760) Compliance & Airworthiness Division Aircraft Certification Services or propeller. The ST's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder. ### SA11854CH_AML.pdf FAA APPROVED MODEL LIST (AML) No. SA11854CH DAKOTA CUB AIRCRAFT, INC. FOR INSTALLATION OF MODIFIED EXHAUST Issue Date: December 17, 2024 Item Aircraft Make Aircraft Model Original Type Certificate Number Certification Basis For Alteration Per TCDS Installation Instructions AML Amendment Date Installation Instructions Revision and Date* 1 1 FS 2003 Corp. PA-12 A-780 CAR 3 2020-STC-01-MAN Original 03/01/2021 2 FS 2003 Corp. PA-12S A-780 CAR 3 2020-STC-01-MAN Original 03/01/2021 3 FS 2002 Corp. PA-14 A-797 CAR 3 2020-STC-01-MAN Original 03/01/2021 4 Piper Aircraft Inc. PA-16 1A1 CAR 3 2020-STC-01-MAN Original 03/01/2021 5 Piper Aircraft Inc. PA-16S 1A1 CAR 3 2020-STC-01-MAN Original 03/01/2021 6 Piper Aircraft Inc. PA-18 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 7 Piper Aircraft Inc. PA-18S 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 8 Piper Aircraft Inc. PA-18 “105” (Special) 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 9 Piper Aircraft Inc. PA-18S “105” (Special) 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 10 Piper Aircraft Inc. PA-18A 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 11 Piper Aircraft Inc. PA-18 “125” (Army L-21A) 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 12 Piper Aircraft Inc. PA-18S “125” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 13 Piper Aircraft Inc. PA-18AS “125” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 14 Piper Aircraft Inc. PA-18 “135” (Army L-21B) 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 15 Piper Aircraft Inc. PA-18A “135” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 16 Piper Aircraft Inc. PA-18S “135” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 17 Piper Aircraft Inc. PA-18AS “135” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 18 Piper Aircraft Inc. PA-18 “150” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 19 Piper Aircraft Inc. PA-18A “150” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 FAA APPROVED MODEL LIST (AML) No. SA11854CH DAKOTA CUB AIRCRAFT, INC. FOR INSTALLATION OF MODIFIED EXHAUST Issue Date: December 17, 2024 Item Aircraft Make Aircraft Model Original Type Certificate Number Certification Basis For Alteration Per TCDS Installation Instructions AML Amendment Date Installation Instructions Revision and Date* 2 20 Piper Aircraft Inc. PA-18S “150” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 21 Piper Aircraft Inc. PA-18AS “150” 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 22 Piper Aircraft Inc. PA-19 (Army L-18C) 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 23 Piper Aircraft Inc. PA-19S 1A2 CAR 3 2020-STC-01-MAN Original 03/01/2021 24 Piper Aircraft Inc. PA-20 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 25 Piper Aircraft Inc. PA-20S 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 26 Piper Aircraft Inc. PA-20 “115” 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 27 Piper Aircraft Inc. PA-20S “115” 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 28 Piper Aircraft Inc. PA-20 “135” 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 29 Piper Aircraft Inc. PA-20S “135” 1A4 CAR 3 2020-STC-01-MAN Original 03/01/2021 30 Piper Aircraft Inc. PA-22 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 31 Piper Aircraft Inc. PA-22-108 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 32 Piper Aircraft Inc. PA-22-135 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 33 Piper Aircraft Inc. PA-22S-135 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 34 Piper Aircraft Inc. PA-22-150 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 35 Piper Aircraft Inc. PA-22S-150 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 36 Piper Aircraft Inc. PA-22-160 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 37 Piper Aircraft Inc. PA-22S-160 1A6 CAR 3 2020-STC-01-MAN Original 03/01/2021 *Or later FAA approved revision FAA APPROVED MODEL LIST (AML) No. SA11854CH DAKOTA CUB AIRCRAFT, INC. FOR INSTALLATION OF MODIFIED EXHAUST Issue Date: December 17, 2024 3 FAA Approved:___________________________________ Paul Nguyen Manager, Central Certification Branch Compliance and Airworthiness Division Aircraft Certification Service ## Every issue (1) - December 17, 2024: Issued, Current. [certificate](https://openairdocs.org/files/sha256/38/a4/38a42da0aeed205a90524d3dbb38a94f4d2a60ec93ad00836950d202a292a18c), [SA11854CH_AML.pdf](https://openairdocs.org/files/sha256/9d/7e/9d7e0574c6fe4e51dc2b0f4402bfe5cb9e2c831daaa3ed49d87f23afe452f87f) --- 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.