Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Boeing Model 767-200, -300, and -300F series airplanes. This proposed AD would require replacing the aileron control override quadrant with a modified unit. This proposed AD is prompted by a report of the seizing of the input override mechanism bearings of the lateral central control actuator on affected airplanes. We are proposing this AD to prevent corrosion of the input override mechanism bearings of the lateral central control actuator, which, in the event of a subsequent jam in the pilot's aileron control system, could result in failure of the aileron override system and consequent reduced lateral controllability of the airplane.