Summary
This document revises an earlier proposed airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 and -11F airplanes, that would have required resistance tests of the brake coils of the auto throttle servo (ATS) and of the elevator load feel (ELF)/flap limiter (FL) duplex actuator for low electrical resistance; and corrective actions, if necessary. This new action revises the proposed rule by removing the resistance tests, adding certain airplanes to the applicability, and adding an inspection of the ATS assembly and corrective actions if necessary. The actions specified by this new proposed AD are necessary to prevent electrical shorting of the brake coils of the ATS, which could result in smoke in the cockpit and/or passenger cabin. This action is intended to address the identified unsafe condition.