Airworthiness Directives; Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes

摘要

This document revises an earlier proposed airworthiness directive (AD), applicable to certain Boeing Model 737-100, -200, - 200C, -300, -400, and -500 series airplanes, that would have required inspection of landing gear parts and/or their records to see that parts have serial numbers and that each part's number of flight cycles has been tracked; assignment of serial numbers and flight cycle use numbers if necessary; and removal of individual landing gear components from service when they reach their life limit. This new action revises the proposed rule by adding landing gear parts to the lists of safe-life components, and assigning life limits to landing gear parts already in service. The actions specified by this new proposed AD are intended to prevent failure of landing gear parts, which could lead to landing gear collapse. This action is intended to address the identified unsafe condition.