The present invention provides a network data recording system particularly adapted for use in transportation systems. Cameras, microphones and a variety of sensors and existing vehicle systems are networked to a central controller, which receives and processes audiovisual and other data from the cameras and sensors. Raw and processed information is stored in a removable memory which may be mirrored to a fixed local memory. The fixed local memory can also be used to store programs and other system data. The controller may be ruggedized to meet disaster recovery requirements. Control panels can be placed throughout the vehicle for use by the crew to monitor conditions and respond to them. Information can be sent to a ground station, and the ground station may also exhibit control over the network data recording system. The system is suitable for use in all manner of transportation systems, such as aircraft, trains, and ships.