 The flight data recorder and cockpit voice recorder CVR from the Crush Beechcraft 350 aircraft that led to the deaths of the chief of armed staff, Lieutenant General Ibrahim Atahiro and 10 others, are order officers have been recovered. The Accident Investigation Bureau revealed this on Saturday. In a statement signed by the AIB's General Manager of Public Affairs Tunji Okitumbi, the agency has been mandated by the Nigerian Air Force to lead the investigation into the crush of the military aircraft. Military authorities have suggested that the flight crush due to adverse weather conditions.