STC ST09811DS

FAA Form 8110-2 (5/14) Page 1 of 3

Number: ST09811DS 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 A2NM Model: 757-300 Series Description of Type Design Change:

757-300 Interior Reconfiguration in accordance with United Airlines Master Drawing List 2500DA14453 Revision A, dated February 7, 2018, or later FAA approved revision.

Instructions for Continued Airworthiness, Document Number 2500R01373C Revision ‘-‘, dated January 19, 2018, and EWIS ICA Source Document number 2500R01492 Revision A, dated January 18, 2018, or later FAA accepted revisions are required for this installation. No AFM Supplement 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.

3) Prior installation of Boeing Service Bulletin 757-51-0010 or equivalent is required for the installation of this STC.

Date of Application: July 5, 2016 Date Reissued:

Date of Issuance: February 17, 2018 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: ST09811DS 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: ST09811DS

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 A2NM.

b. The certification basis for parts changed or affected by this modification since the reference application date February 7, 2017, is based upon the type certification basis shown in TCDS A2NM with the following exception.

14 CFR Part Amdt

25.981 (b) 102

25.795 (a)(1)(2) 106

25.853 (a)(c)(d)(e) 83

c. The modification certification basis also includes Special Conditions number 25-397-SC, Boeing Model 757 Series Airplanes; Seats with Non-Traditional, Large, Non-Metallic Panels, dated December 18, 2009.

d. Equivalent Level of Safety Memo CT1192NW-D-C-1 dated February 2, 2012, was utilized for finding compliance with 14 CFR 25.813(c).

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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: ST09811DS

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: ST09811DS

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: ST09811DS