A few quick notes from the conclusion of the report:
- There have been no clues for any technical failures on the helicopter.
- The platform was lacking some maintenance, however it is thought that this did not contribute to the accident
- It is thought that the pilot during the startup had pushed the cyclic in a too much forward position and was not aware of this
- This led to more than normal virbration and shaking of the helicopter and as a result the pilot started to look for the 'neutral position' of the cyclic (perhaps in the wrong way the investigators speculate).
- While looking for the 'neutral position (is that a good translation?) it is possible that that collective was not fully in the downward position
- During this proces the rotor rmp increased, with as a result a decrease in drag between the helicopter and the platform, resulting in a turning of the helicopter.
- The investigators seem to think that the pilot did not adequatly react on this situation.
- While having a low rmp (70 to 80 %) the pilot decided to pull the collective, being affraid he would fall in as a result of the vibration and turning of the helicopter.
- This resulted in a loss of control
- It is not known if and what the influence of the cyclic friction was since the friction was unfortunately not directly looked at after recovering the helicopter
Last edited by Helicheese; 28th March 2013 at 12:52.