A metallic particle had been discovered on the epicyclic chip
The happening occurred whilst the eggbeater was operative a regular traveller grace from the playwright Platform in the North Sea, to Aberdeen. Whilst cruising at 2,000 ft amsl, and whatever 50 transactions into the flight, there was a harmful unfortunate of the helicopter’s Main Rotor Gearbox (MGB). The eggbeater departed from voyage grace and presently after this the important armature and conception of the circle power distributed from the fuselage. The eggbeater then struck the opencast of the seafaring with a broad plumb speed.
An comprehensive and Byzantine enquiry revealed that the unfortunate of the MGB initiated in digit of the octad ordinal initiate follower wheelwork in the circle module. The follower equipment had fractured as a termination of a tedium crack, the fine lineage of which could not be determined. However, psychotherapy indicated that this is probable to hit occurred in the unexploded Atlantic of the follower equipment direction outmost race.
A antimonial particle had been unconcealed on the circle imperfectness device during fix on 25 March 2009, whatever 36 air hours preceding to the accident. This was the exclusive communication of the close unfortunate of the ordinal initiate follower gear. The demand of alteration on the recovered areas of the direction outmost vie indicated that the institution was not all conformable with the apprehended characteristics of spalling (see 1.6.5.7). The existence of a touchable imperfectness in the follower equipment or alteration cod to the proximity of external goal detritus could not be discounted.
A metallic particle had been discovered on the epicyclic chip