COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 99 Series Aeroplanes AD/BEECH 99/5 MLG Drag Leg Lock Link Roll Pin 6/96 Applicability: Models 99, 99A, A99A, B99, and C99, with serial numbers U-1 through U-239. Requirement: Inspect 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 link, in accordance with the Accomplishment Instructions section of Beech Service Bulletin 2607, Revision 1. Replace any drag leg lock link that does not have the roll pin hole drilled through both walls of the link. Accomplish this replacement in accordance with the maintenance manual. Note: FAA AD 96-03-13 Amdt 39-9510 refers. Compliance: Within 100 hours' time in service after 23 May 1996. Background: The FAA received a report of an incident in which a main landing gear collapse had occurred. An investigation revealed that the roll pin hole was not completely drilled through both walls of the drag leg lock link.