Airworthiness Directives; Beech Aircraft Corporation 90, 99, 100, and 200 Series Airplanes

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This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Beech Aircraft Corporation (Beech) 90, 99, 100, and 200 series airplanes. The proposed action would require inspecting the main landing gear drag leg lock link to ensure that the hole for the roll pin is drilled completely through both walls of the main landing gear drag leg lock link and, if not drilled completely through both link walls, replacing any main landing gear drag leg lock link. An incident where the left main landing gear collapsed on one of the affected airplanes prompted the proposed action. Investigation revealed that the roll pin hole was not completely drilled through both walls of the drag leg lock link. The actions specified by the proposed AD are intended to prevent main landing gear collapse caused by drag leg lock link failure, which, if not detected and corrected, could result in loss of control of the airplane.