COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Fokker F100 (F28 Mk 100) Series Aeroplanes
AD/F100/15 Centre Section Frame Strips 4/99
F.28 Mk.0100 aircraft, serial numbers 11244 through 11371.
Install two reinforcement plates each at fuselage STA.14911 and STA.17011 in accordance with Fokker Service Bulletin (SB) F100-53-072 dated 12 March 1993.
RLD BLA 93-037(A) refers.
Unless previously accomplished, before accumulating 24,000 flight cycles since new.
This Airworthiness Directive becomes effective on 22 April 1999.
During fatigue tests on the F.28 Mk.0100, cracks were discovered in the frame strips at fuselage STA.14911 and STA.17011. This AD requires a modification to increase the crack initiation threshold beyond 90,000 flight cycles.