# STC ST09724AC - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Interior Reconfiguration and New Economy Seat Installation - Applied: October 30, 2012 - Status date: July 3, 2017 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A28NM](https://openairdocs.org/tcds/A28NM) - Certificate PDF: https://openairdocs.org/files/sha256/92/56/92560ac24eb270b95682c294488ab38bc139a66865923b3d25a8a16bac546a7b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C8E1A8EFD213DA698625822D004DAC87.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST09724AC ## ADs that name it (0) None. ## Approved models (1) - Airbus A320-232 ([TCDS A28NM](https://openairdocs.org/tcds/A28NM)) ## 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: ST09724AC This certificate issued to: United Airlines 600 Jefferson St. Houston, TX 77002 Part 25 of the Federal Aviation Regulations Original Product – Type Certificate Number: Make: The Boeing Company A28NM Model: A320-232 Series Description of Type Design Change: A320-232 Interior Reconfiguration and New Economy Seat Installation in accordance with United Airlines Master Drawing List 2500DA12976 Revision A, dated May 9, 2013 or later FAA approved revision. Instructions for Continued Airworthiness, Document Number N0431-D70 Revision A, dated May 3, 2013 or later FAA accepted revision is required for this installation. No AFM Supplement or EWIS Source Document is required for this modification. 1) The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. 2) 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: October 30, 2012 Date Reissued: February 1, 2016; July 3, 2017 Date of Issuance: May 10, 2013 Date Amended: By Direction of the Administrator Signature Title Patrick Ashton, STC Administrator United Airlines Organization Designation Authorization FAA Form 8110-2 (5/14) Page 2 of 3 Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: ST09724AC To (Name and address of transferee) From (Name and address of grantor) FAA Form 8110-2 (5/14) Page 3 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST09724AC Certification Basis: Based on 14 CFR § 21.115 and § 21.101, and the FAA policy for design changes that are not significant in FAA Order 8110.48, the certification basis for this modification is as follows: a. The type certification basis for parts not changed or not affected by the change is shown in TCDS A28NM. b. The certification basis for parts changed or affected by this modification since the reference application date October 30, 2012, is based upon the type certification basis shown in TCDS A28NM with the following exceptions. 14 CFR Part Amdt 14 CFR Part Amdt 25.305 (a)(b) 86 25.869 (a)(1)(4) 72 25.307 (a)(d) 72 25.853 (a)(c)(d)(e)(f) 83 25.625 72 25.869 (a)(4) 72 25.812 (a)(1)(e)(i)(l)(1)(2) 88 c. The modification certification basis also includes Special Conditions Number 25-403-SC, dated March 9, 2010. --END-- FAA Form 8110-2 (5/14) Page 4 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST09724AC FAA Form 8110-2 (5/14) Page 5 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST09724AC FAA Form 8110-2 (5/14) Page 6 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST09724AC ## Every issue (2) - July 3, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/92/56/92560ac24eb270b95682c294488ab38bc139a66865923b3d25a8a16bac546a7b) - May 10, 2013: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/25/71/2571092739d1ecad679a56b9d55c270cef59c536b5a77529f0b60275bb35b06a) --- 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.