# STC ST00234BO - Type: Supplemental type certificate - Status: Current, Reissued - Holder: BAE SYSTEMS Information and Electronic Systems Integration Inc., United States - Description: Installation of a modified exhaust. - Applied: November 7, 2005 - Status date: March 22, 2012 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A21NM](https://openairdocs.org/tcds/A21NM) - Certificate PDF: https://openairdocs.org/files/sha256/e2/ed/e2edc8dd9632ad3844f03540c3d6ec4c71001ed0bf8c3cc22c75aaea6dd1a925 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7621667B1F2C7593862579CD005E78C3.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST00234BO ## ADs that name it (0) None. ## Approved models (1) - EADS CASA CN-235-300 ([TCDS A21NM](https://openairdocs.org/tcds/A21NM)) ## 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 25 of the Federal Aviation Regulations. Installation of BAE Systems modified exhaust in accordance with BAE Master Document List A412-000, Revision 2, dated August 2006, or later FAA-approved revision. 1. Maintenance must be in accordance with BAE Instructions for Continued Airworthiness (ICA) Document Number A412-021, Revision 1, dated March 1, 2006, or later FAA accepted revision. The ICA must be made available to the operator at the time of installation. 2. Compatibility of this design with previously approved modifications must be determined by the installer. 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. BAE SYSTEMS Information and Electronic Systems Integration Inc. 65 Spit Brook Road Nashua, NH 03061 Date reissued: March 22, 2012 Date amended: October 24, 2006 ( Signature) William Witzig Manager Boston Aircraft Certification Office ( Title) A21NM Make : Construcciones Aeronauticas, S.A. Model : CN-235-300 Date of application: November 7, 2005 Date of issuance: July 10, 2006 United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number ST00234BO Effective March 22, 2012 Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) ( City, State, and ZIP code) from (Name of grantor)(Print or type) (Address of grantor) (Number & street) (City, State, and ZIP code) Signature of grantor ( In ink): ## Every issue (2) - March 22, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e2/ed/e2edc8dd9632ad3844f03540c3d6ec4c71001ed0bf8c3cc22c75aaea6dd1a925) - July 10, 2006: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/e8/18/e818a63053f7b660ccf62d6b775aeeb3e06380b9a6e516a40d277366d446851e) --- 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.