STC SA2775NM-D

United States of America Certificate Department of Transportation Federal Aviation Administration ORRENDERED Supplemental Type Certificate 6-24.20a9 Number SA2775NM-D This certificate issued to: UNITED AIR LINES Part 25 of the Federal Aviation Regulations. Ref. TC Data Sheet AWE for Special Conditions.

Original Product - Type bertificate Number: АЗWE The Boeing Company Model: 727-222 Series Description of Type Design Change:

Installation of dual Mode S/ATCRBS transponders and full Traffic Alert and Collision Avoidance System (ICAS) provisions, in accordance with United Air Lines DAS 1WE approved Master Drawing List 2775, dated June 23, 1990, or later approved revision. United Air Lines AFM Supplement to FAA Approved Flight Manual D6-8728-222 dated 6/23/90, or later approved revision, is required as part of this installation.

This approval does not extend to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. The Mode S functions of the system are not approved for Traffic Alert and Collision Avoidance System (TCAS) operation. The ever a S1e pening date which is the basis for approval shall remain in affect until ser- Smiths Industries IVSI are not approved for ICAS operation.

vendered, suspended, nevcked, or a termination date is therwise established by the Administrator of the Federal Aviation Administration .

Date of Application: 05/08/90 Date Reissued:

Date of Issuance: . 06/23/90 Date Amended: 1/28/91, 9/6/90 DERAL AVIATION By Direction of the Administrator ≤->.

R. M. Casterline (Signature) OMINISTRATO UNITED AIR LINES DAS IWE DAS Staff Coordinator (Title)

47.