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/F50/20 Amdt 1 Engine Tailpipe Assembly 1/92 Applicability: All F50 series aircraft equipped with P/N F8200-08-401 or F8200-08-403 exhaust tailpipe assemblies. Requirement: Action in accordance with the Technical Requirements of Netherlands Airworthiness Directive BLA No 89-038 Issue 2. Compliance: As detailed in the Requirement document with a revise effective date of 12 January 1992. Background: This Directive has been amended to reflect the revision of Netherlands Airworthiness Directive BLA No. 89-038. The revision includes additional inspection requirements for P/N F8200-08-403 tailpipes, and introduces a terminating action.