Originally Posted by
Mitchaa
Bristow Grounds Airbus EC225 Helicopters After CHC Crash - WSJ
Reads like they have ruled out gearbox failure to me which is quite concerning because if it wasn't the gearbox responsible for ripping the head off the aircraft, what was it?
(MRH retention nut installed incorrectly?)
Oh well, enough speculation, I guess we will find out at the press conference tomorrow where their area of interest lies.
There is no main rotor head retaining nut on the 225. If the main rotor shaft retaining nut had failed we would not have the lift housing and suspension bar with the shaft assy.