COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 1900 Series Aeroplanes AD/BEECH 1900/8 Amdt 1 Pilot and Co-Pilot Chair Locking Mechanism 7/97 Applicability: Models Serial Numbers 1900 Airliner, 1900C, and 1900D. UA-1 through UA-3, UB-1 through UB-74, UC-1 through UC-174, and UE-1 through UE-17. Requirement: a. Inspect the pilot and co-pilot chairs to assure that the locking pins will fully engage in the seat tracks, in accordance with the "Accomplishment Instructions" section of Beech Service Bulletin 2444 Revision II. b. Modify any chair where the locking pin fails to fully engage or is misaligned, in accordance with the maintenance manual as specified in Beech Service Bulletin 2444, Revision II. Note: FAA AD 97-06-06 Amdt 39-9963 refers. Compliance: Unless already accomplished, within 150 hours time in service after 19 June 1997. This amendment becomes effective on 19 June 1997. Background: The FAA received reports of pilot and co-pilot chair locking pin malfunctions, which in one instance caused the pilot chair to slide back from the full forward position. Amendment 1 is issued in response to a new FAA AD which requires the inspection to be accomplished in accordance with revised service information, as reflected in Revision II of the requirement document. The original issue of this airworthiness directive became effective on 1 April 1993.