Transport i lotnictwo · 27.09.2005

Airworthiness Directives; Boeing Model 767 Airplanes

The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 767 airplanes. This proposed AD would require drilling a drain hole in the flanged tubes for the E1A and E1B elevator control cable aft pressure seals; doing repetitive inspections for dirt, loose particles, or blockage of the flanged tube and drain hole for the E1A and E1B elevator control cable aft pressure seals and corrective action if necessary; replacing the aft air-intake duct assembly with a new or modified aft air-intake duct assembly and installing a dripshield; and modifying the side brace fittings and installing gutters on the horizontal stabilizer center section. This proposed AD results from reports of stiff operation of the elevator pitch control system and jammed elevator controls. We are proposing this AD to prevent moisture from collecting and freezing on the elevator control system components, which could limit the ability of the flightcrew to make elevator control inputs and result in reduced controllability of the airplane.