Helicopter down in Sydney 1st March 08
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Chopper joyride pilot blamed for crash.......Sydney Morning Herald article October 3, 2008 - .....The pilot of a helicopter which crashed in northern Sydney earlier this year, seriously injuring four passengers, has had his licence suspended.An investigation revealed he was flying lower than his licence permitted and the craft breached weight restrictions.The Bell 206 JetRanger was being used for a 30th birthday party joyride when it crashed just before 1pm on March 1 in a backyard in Arcadia.An Australian Transport Safety Bureau investigation report released today 200801245 , reveals that the pilot's decision to fly low over the residential area breached the restrictions of his private pilot's licence.The report notes witness statements that the craft was
and that the
It also reveals that the weight of the helicopter when it took off from Bankstown airport was 57 kilograms over the maximum take-off weight for its type, a clear breach of Civil Aviation Safety Authority regulations.
the report states. In testimony to the investigation, the pilot told investigators there was silence in the helicopter after he made a steep banking turn to the left.The craft crashed into the backyard of a family home, narrowly missing two teenage girls sitting in their loungeroom..............Di
flying low over the trees
helicopter was being operated at a height from which recovery was not possible
The Civil Aviation Safety Authority has advised that the pilots licence has been suspended after the accident pending a review by the authority
Last edited by Diatryma; 6th Oct 2008 at 04:38.
Extract from accident report:
"When the helicopter executed the steeply banked turn to the left at low forward airspeed, the inertia in the main rotor blades and main rotor RPM would have decreased, resulting in less main rotor efficiency..."
Anyone who is more aerodynamics savvy than me care to comment on the veracity of this, viz, steep turns result in RPM decrease, resulting in less efficiency??
"When the helicopter executed the steeply banked turn to the left at low forward airspeed, the inertia in the main rotor blades and main rotor RPM would have decreased, resulting in less main rotor efficiency..."
Anyone who is more aerodynamics savvy than me care to comment on the veracity of this, viz, steep turns result in RPM decrease, resulting in less efficiency??
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"When the helicopter executed the steeply banked turn to the left at low forward airspeed, the inertia in the main rotor blades and main rotor RPM would have decreased, resulting in less main rotor efficiency..."
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Poorly worded.
Although the author hasn't used the word, is this overpitching?
Although in a turn, heavy aircraft, the aircraft has slowed and pilot has tried to accelerate, is it possible that he has overpitched and this has lead to rotor droop with the resultant bits that the author has then described?
Although in a turn, heavy aircraft, the aircraft has slowed and pilot has tried to accelerate, is it possible that he has overpitched and this has lead to rotor droop with the resultant bits that the author has then described?
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The pilot made some stupid f$@&*%g choices and got an outcome consistent with the choices made.
The author of the report didn't say that in so many words either.
GP
The author of the report didn't say that in so many words either.
GP
