# STC ST04412AT - Type: Supplemental type certificate - Status: Current, Issued - Holder: Avionics Support Group Inc., United States - Description: Installation of a cfMount (TM) and Cradle - Applied: August 9, 2016 - Status date: November 7, 2017 - Product: Aircraft, Large Airplane - Certification basis: Part 1, Part 21, Part 25, Part 26 - Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM) - Certificate PDF: https://openairdocs.org/files/sha256/70/27/7027321bfa3fc712f5858183ed43c0e892f944b797bfae5d2c7dd0d19755eae9 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DF99BC51DFB289FC862581D8007115BE.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/ST04412AT ## ADs that name it (0) None. ## Approved models (2) - The Boeing Company 757-200 Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM)) - The Boeing Company 757-300 Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM)) ## 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. FAA Form 8110-2 (5/14) Page 1 of 3 Number: ST04412AT This certificate issued to: Avionics Support Group, Inc. 13155 SW 132 Avenue Miami, FL 33186 Part 25 of the Federal Aviation Regulations. Original Product – Type Certificate Number: A2NM Make: Boeing Model: 757-200/-300 series Description of Type Design Change: Installation of a cfMount™ and Cradle in accordance with Master Data List (MDL) 216177-MDL, Rev. B, dated October 9, 2017, or later FAA approved revision. 1. The installer must determine whether this design change is compatible with previously approved modification. 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. 3. Instructions for Continued Airworthiness (ICA) document 216177-ICA, Rev. A, dated July 21, 2017 or later FAA accepted revision must be made available to the operator at the time of installation. Date of Application: August 9, 2016 Date Reissued: Date of Issuance: November 07, 2017 Date Amended: Signature Title: (For) Christina M. Underwood, AIR-7A0 Manager, Atlanta ACO Branch FAA Form 8110-2 (5/14) Page 2 of 3 Transfer the ownership of Supplemental Type Certificate Number: ST04412AT 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 (Continuation Sheet) Number: ST04412AT Data of Issuance FAA Form 8110-2 (5/14) Page 3 of 3 Certification Basis: Based on 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in FAA O rder 8110.48, the certification basis for the Boeing 757-200/-300 series aircrafts is as follows: a. The type certification basis for the Boeing 757-200/-300 series aircrafts are shown on TCDS A2NM for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference dat e of application, August 9, 2016, is based upon part 25 as amended by Amendment 25 -142. Based on 14 CFR 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be: Regulations at the latest amendment 25-0 through 25-142 § 25.29 § 25.301 § 25.303 § 25.305(a)(b)(1) § 25.307(a) § 25.561 § 25.571(a)(b)(c) § 25.601 § 25.603 § 25.605 § 25.609 § 25.611 § 25.613 § 25.625 § 25.773(a) § 25.789(a) § 25.1529 § 25.1541 Regulations at an intermediate amendment § 25.307(a) Regulations at the amendment level in TCDS A2NM None 14 CFR Part 26 Regulations Based on 14 CFR 21.101(g), applicable provision of 14 CFR part 26 are included in the certification basis. For any future 14 CFR part 26 amendments, the holder of this STC must demonstrate compliance with the applicable sections. As of the issuance date of this STC, compliance has been found for the following regulation s: 14 CFR 26.11 and 14 CFR 26.47. --------------------------END--------------------------- ## Every issue (1) - November 7, 2017: Issued, Current. [certificate](https://openairdocs.org/files/sha256/70/27/7027321bfa3fc712f5858183ed43c0e892f944b797bfae5d2c7dd0d19755eae9) --- 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.