Airworthiness Directives; Boeing Model 757-200, -200CB, and -200PF; and 767-200, -300, and -300F Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757-200, -200CB, and -200PF; and 767-200, -300, and -300F series airplanes; that requires modification of the right main landing gear and auto-speedbrake control system to provide an air/ground signal to the system. This action is necessary to prevent uncommanded deployment of the auto-speedbrake spoilers during flight, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.