STC ST09842DS

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United Airlines 4933 Wright Road Houston, Texas 77032 07/09/2025 ST09842DS 25 & 26 Federal Aviation Regulations T00001SE The Boeing Company 777-200 Series 5HIHU36&3(555HY%GDWHG-XQH2'$SURMHFWQXPEHU  &DELQLQWHULRUV '$5HYLVLRQ$GDWHG-XO\RUODWHU)$$DSSURYHGUHYLVLRQ  6XSSOHPHQWDO ,QVWUXFWLRQVIRU&RQWLQXHG$LUZRUWKLQHVV'RFXPHQW1XPEHU5&5HYLVLRQGDWHG-XO\1 RUODWHU)$$DSSURYHGUHYLVLRQ  1R$)06XSSOHPHQWLVUHTXLUHGIRUWKLVPRGLILFDWLRQ Limitations and Conditions:

(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. (continued on page 3) 05/22/2025 07/08/2025 Raju Tumarada, STC Administrator United Airlines Organization Designation ,07/15/2025

Number   (IIHFWLYH'DWH 07/15/2025 I Transferr Endorsementt Transfer the ownership of Supplemental Type Certificate Number:

Too (Name and address of transferee):

Date oI transfer:

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United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate  (Continuation Sheet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umber ST09842DS (IIHFWLYH'DWH 07/15/2025 Limitations and conditions (continued):

(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 T00001SE.

b. The certification basis for parts changed or affected by this modification since the reference application date May 22, 2025 is based upon the type certification basis shown in TCDS T00001SE with the following:

14 CFR Part Amdt

25.869(a) 25-113

25.853 (a)(d) 25-116

25.981(d) 25-125

- - - END - - Effective Date 07/15/2025