Modifies the aircraft to install a one way check valve in the yaw damper actuator hydraulic return port. The installation is in accordance with DAS-1-WE Approved United Air Lines Drawing List No. 5990 dated April 27, 1994, or later FAA approved revisions.

Please contact modification supplier for further details.

STC Status: Reissued
STC Date: 30/11/11
Responsible Office: Ft. Worth Special Certification Office (ASW-190), Tel: (817) 222-5190

Boeing Company, The

• 767-200 Series
• 767-300 Series