The helicopter flew along the runway at about 30 ft agl and carried out a quick stop. Witnesses reported a nose-up pitch attitude of around 45° was attained as the helicopter flared, then, as it levelled, the rotor blades struck the tail boom. The helicopter rotated to the right through 180° and dropped vertically to the ground. Everyone on board was taken to hospital; the pilot died subsequently. No technical failure was found which could explain the accident.