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/F50/12 Engine Anti-Ice Control Unit 3/89
F27 Mark 050 aircraft.
Replace engine anti-ice control units in accordance with the requirements of Fokker SB F50-30-003.
RLD AD BLA No. 88-105 refers.
Forthwith.
Following a number of flight tests which revealed ice formation in the engine intake duct, the manufacturer has released a new anti-ice control unit which increases the protection of the intake duct against ice formation. Fokker SB F50-30-003 details the procedure for replacement of the anti-ice control unit.