STC ST09734AC

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___

Part of .

ST09734AC United Airlines 4933 Wright Rd.

Houston, TX 77032 25 the Federal Aviation Regulations A28NM Airbus A320-232 Series A320-232 Interior Reconfiguration and New Economy Seat Installation in accordance with United Airlines Master Drawing List 2500DA12977 Revision A, dated July 16, 2013 or later FAA approved revision.

Instructions for Continued Airworthiness, Document Number N0431-D70 Revision A, dated March 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.

(See continuation on page 3) 06/10/2013 February 1, 2016; July 3, 2017; October 30, 2020 07/17/2013

Raju Tumarada, STC Administrator United Airlines Organization Designation Authorization 3

FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___

ST09734AC ST09734AC 3

ST09734AC Limitations and Conditions (continued from page 1):

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.

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 June 10, 2013, is based upon the type certification basis shown in TCDS A28NM with the following exceptions.

c. The modification certification basis also includes Special Conditions Number 25-403-SC, dated March 9, 2010.

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