COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 55, 58 and 95-55 (Baron) Series Aeroplanes AD/BEECH 55/77 Engine Controls Support Structure 2/93 Applicability: Models Serial Numbers 58 and 58A TH-1389 and TH-1396 through TH-1662 58TC and 58TCA TK-147 and TK-151 58P and 58PA TJ-436 and TJ-444 through TJ-497 Requirement: Modify the engine controls support structure in accordance with the instructions to Beech Kit No. 58-5016-1 S as referenced in Beech Service Bulletin 2439. Note: FAA AD 92-23-04 Amdt 39-8404. Compliance: Within 100 hours' time in service after 4 February 1993. Background: The FAA has received several reports of cracked angle attachment clips that support the engine controls inside the pedestal on the affected aircraft. The actions specified by this Directive are intended to prevent the loss of engine throttle control caused by failure of the attachment clips.