Helicopter crash: Why we have not recovered black box, flight data recorder - NSIB The Nigerian Safety Investigation Bureau (NSIB) has disclosed that, despite extensive search efforts, they have not yet located the wreckage or critical components, such as the black box, Flight Data Recorder (FDR), or Cockpit Voice Recorder (CVR), from the recent helicopter crash. The NSIB attributes these challenges to difficult operating conditions, poor visibility at depth, and limitations of human divers. In a statement from NSIB’s Director of Public Affairs and Family Assistance, Bimbo Olawumi Oladeji, it was confirmed...