Airworthiness Directive · Amendment 39-9932 · Fokker Services Airplanes
Fokker Services Airplanes
This AD applies to Fokker Services F27 Mark 050, F27 Mark 100, F27 Mark 200, F27 Mark 300, F27 Mark 400, 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 certain Fokker Model F27 Mark 050, 100, 200, 300, 400, 600, and 700 series airplanes, that requires an ultrasonic inspection to determine if certain tubes are installed in the drag stay units of the main landing gear (MLG), and various follow-on actions. This amendment is prompted by a report that, due to fatigue cracking from an improperly machined radius of the inner tube, a drag stay broke, and, consequently, lead to the collapse of the MLG during landing. The actions specified by this AD are intended to prevent such fatigue cracking, which could result in reduced structural integrity or collapse of the MLG.
