Helicopter crash at breighton east yorks
Discussion
Saw this report in the local paper
http://www.yorkpress.co.uk/news/15410231.Investiga...
Here is the AAIB report
https://www.gov.uk/aaib-reports/aaib-investigation...
Conclusion
The helicopter was well maintained, serviceable and in good condition prior to the accident.
All the damage to the helicopter’s structure, its components and systems is attributable
to the main rotor disc striking the tail boom structure in the vicinity of the stabiliser cross
tube. There was no evidence of pre-accident defects of the flying controls or transmission
system which could have led to the rotor disc colliding with the tail boom, therefore it
probably occurred as result of control inputs.
The helicopter was close to or above the MAUW of 1,588 kg (3,500 lb). Also, the CG was
towards the forward limit of the allowable range detailed in the Flight Manual, thus the
margin of clearance of the rotor disc from the tail boom in flight may have been reduced,
increasing the risk of the disc striking the tail boom.
It is probable that whilst a quick stop was carried out, coarse control inputs associated
with the dynamic manoeuver caused the main rotor disc to contact the tail boom.
http://www.yorkpress.co.uk/news/15410231.Investiga...
Here is the AAIB report
https://www.gov.uk/aaib-reports/aaib-investigation...
Conclusion
The helicopter was well maintained, serviceable and in good condition prior to the accident.
All the damage to the helicopter’s structure, its components and systems is attributable
to the main rotor disc striking the tail boom structure in the vicinity of the stabiliser cross
tube. There was no evidence of pre-accident defects of the flying controls or transmission
system which could have led to the rotor disc colliding with the tail boom, therefore it
probably occurred as result of control inputs.
The helicopter was close to or above the MAUW of 1,588 kg (3,500 lb). Also, the CG was
towards the forward limit of the allowable range detailed in the Flight Manual, thus the
margin of clearance of the rotor disc from the tail boom in flight may have been reduced,
increasing the risk of the disc striking the tail boom.
It is probable that whilst a quick stop was carried out, coarse control inputs associated
with the dynamic manoeuver caused the main rotor disc to contact the tail boom.
Edited by anonymous-user on Friday 14th July 09:42
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