# STC SA00014AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Mike Jones Aircraft Sales Inc., United States - Description: Installation of Lycoming model L/TIO-540-J2B engines in accordance with Colemill Enterprises, Inc. Installation Instructions for Modification of Piper Navajo Model PA-31-350 dated October 9, 1992, or later FAA approved, revision. - Applied: October 5, 1992 - Status date: February 10, 2011 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO) - Certificate PDF: https://openairdocs.org/files/sha256/3f/3b/3f3be3164ab3190609440752f04990481053754c5474474fee1aa1c7de450237 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8FC0BDAF49BD980A8625784E007B9B53.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA00014AT ## ADs that name it (0) None. ## Approved models (1) - Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A00014AT This certificate issued to: Mike Jones Aircraft Sales, Inc. 1932 Memorial Blvd Murfreesboro, TN 37129 Certifies that the change in the type design for the following product with the linvitations and conditions Wherefore us specified hereon meets the airvertliness requirenents of Part 3 of the Civil Air Aregulations unt Part 23 of the Federal Aviation Pegulutions. Original Product TypeY'ertificate Nunter: A20SO Make: Piper Model: PA31-350 Description of Type Design Change: Installation of Lycoming model L/T1O-540-J2B engines in accordance with Colemill Enterprises, Inc. "Installation Instructions for Modification of Piper Navajo Model PA-31-350" dated October 9, 1992, or later FAA approved, revision. This approval is limited to the Model PA-31-350 aircraft only. This modification should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it has been determined by the installer that the interrelationship between these modifications are compatible and will produce no adverse affect on airworthiness. suspended revsked or a lemination tale is othereise established by the Aduvinistrater of the Federal. Ariulion Administration. Date of Application: October 5, 1992 Sale reined: February 10, 2011 Vule of inance: October 26, 1992 ule anvended: FEDERAL AVIATION a direction of tir Adinis agine Melvin D. Taylor (Signagure) TOMINISTRATO Atlanta Aircraf Certification Office Manager (Title) is punishable by c00, or impr ment not exce ding 3 years, or both FAA FORM 8110-2 PAGES ## Every issue (1) - February 10, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3f/3b/3f3be3164ab3190609440752f04990481053754c5474474fee1aa1c7de450237) --- 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.