The pilot had only just taken delivery of the helicopter. After attending a party he invited an acquaintance to inspect the aircraft and listen to a compact disc player which was installed. The pilot stated that the helicopter battery did not seem to have much charge and since he knew the aircraft was to be used in the morning, he decided to start the engine. He believed that there was a note in the Flight Manual stating not to leave the engine running too long without engaging the main rotors. He therefore engaged the rotor and the next thing he could recall was that the helicopter was on its right side. The pilot, although the owner of the helicopter, was not qualified or authorised for night flying. He had consumed some alcohol at the party, and there is some doubt as to whether a takeoff had been intended. Nevertheless, by starting the engine and engaging the main rotor, the pilot should have been aware that an inadvertent takeoff was possible.
