COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F27 Series Aeroplanes AD/F27/127 Fuselage Bracket Attachment Fasteners 12/91 Applicability: Model F27 S/No's 10102 thru 10433, 10435 thru 10443, & 10446 thru 10450. Requirement: Action in accordance with the Technical Requirements of RLD AD 91-112. Note: Fokker SB F27/57-23 Revision 6 refers. Compliance: As specified in the Requirement Document with a revised effective date of 12 December 1991 for Australian registered aircraft. Background: Reports of loose bolts and hi-shear pins in the brackets on the front and rear spars. The effective date required by the RLD is extended by approximately two months.