Airworthiness Directive · Amendment 39-9943 · Fokker Services Airplanes
Fokker Services Airplanes
This AD applies to Fokker Services F27 Mark 100, F27 Mark 200, F27 Mark 300, F27 Mark 400, F27 Mark 500, F27 Mark 600, F27 Mark 700.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to all Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, that requires repetitive x-ray inspections to detect cracks in stringers 4 through 7 of the lower skin of the wings, and modification or repair, if necessary. This amendment also requires modification of the stringers of the lower skin of the wings, which terminates the repetitive inspections. This amendment is prompted by reports of fatigue cracking found in stringers 4 through 7 of the lower skin of the wings. The actions specified by this AD are intended to prevent such fatigue cracking, which could result in reduced structural integrity of the wings.
