Summary
This document revises an earlier proposed airworthiness directive (AD), applicable to certain Saab Model SAAB SF340A and SAAB 340B series airplanes, that would have required replacement of the retract actuator bracket attachment bolt (RABAB) of the main landing gear (MLG) with a new RABAB, and reidentification of the MLG shock strut. This new action revises the proposed rule by referencing new service information; and by adding an inspection for corrosion, fretting, or other damage of any RABAB installed in accordance with the old service information; and applicable corrective actions. The actions specified by this new proposed AD are intended to prevent failure of the RABAB, which could result in loosening of the actuator bracket and consequent failure of the MLG to retract, with considerable damage to other landing gear parts, including the MLG trunnion fitting. This action is intended to address the identified unsafe condition.