COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F50 (F27 Mk 50) Series Aeroplanes AD/F50/8 Passenger Entrance Door Coamings 3/89 Applicability: F27-050 S/Nos 20103 to 20108 and 20110 to 20117. Requirement: Action in accordance with Fokker SB F50-25-005. Note: RLD AD 88-90 refers. Compliance: Prior to 30 June 1989. Background: The upper coaming panel above the passenger entrance door velcro attachment has been found to be insecure. This may cause the coaming to drop and block the door during an emergency disembarkation.