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Crack found in crashed helicopter rotor gearbox

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Walter Winkel
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photographer: TT / Tor Erik H. Mathiesen

Investigators in the Norwegian Accident Investigation Commission which examines what went wrong in the Norwegian helicopter accident April 29 has detected a fatigue crack in one of the gears included in the main rotor gearbox.

There are also other signs metallurgical fatigue problems.

In the event unloaded the main rotor and all 13 people on board were killed when the helicopter, Airbus Helicopters H225 model of the Super Puma, crashed on an island east of Turøy, near Bergen.

According to Kåre Halvorsen, department director of the Commission of Inquiry, similar fatigue cracks develop into crimes over time.

They want EASA to evaluate if the gear is safe.

- A fatigue crack is not something you want, and therefore we have now gone out and said that we have found it, says Halvorsen to Norwegian local radio.

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Walter Winkel
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