Flight-control operating levers in GROB Model G120A airplanes must be modified to prevent a ball bearing failure.
McCauley props installed on BAE Jetstream Model 4101 airplanes must be checked for cracks.
The nose landing gear drag link right-hand part on all Pilatus PC-12 and PC-12/45 airplanes must be replaced every 4,000 landings until an improved design part is installed.
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