bbc news has approached randox testing services and invited them to speak to us for an interview. testing services there. air accident investigators say the helicopter involved in a crash which killed the owner of leicester city spun out of control — after the pilot's pedals became disconnected from the tail rotor. they're still trying to establish what caused the failure. investigators have released this diagram showing the mechanism connecting the helicopter‘s tail rotor blades with the pilot's pedals had become disconnected. this meant the aircraft turned uncontrollably to the right. duncan kennedy reports. it was just after the helicopter left leicester's king p0wer stadium that it crashed. the five people on board were killed. they included leicester's owner vichai srivaddhanaprabha who was as devoted to the club as the club's fans were to him. their shock developed into this response. flowers, cards and questions. now an interim report into the crash has concluded that there was a mechanical disconnect between the pilot's pedal and the rear rotor blade that in turn appears t