Accidents
Main Gearbox Fatigue Likely Cause of Airbus H225 Crash
Norway's accident investigation bureau said the fatigue phenomenon appears to have its origin on the inner surface of the second-stage planet gear.

The fatal accident of an Airbus Helicopters H225 (EC225LP), registered as LN-OJF, on April 29 off the coast of Norway, near Turoey outside Bergen, was “most likely” the result of a fatigue fracture in one of the main gearbox's second-stage planet gears. According to AIBN, Norway's accident investigation bureau, the fatigue phenomenon appears to have its origin on the inner surface of the gear, propagating toward the web of the gear teeth.