On 2 October 1996, shortly after take off, the crew of Aeroperu Flight 603 is confused by false speed and altitude readings and contradictory warnings from the aircraft's air data system. In preparation for an emergency landing, the crew descends the aircraft, but unknowingly descend too far by relying on the false readings. The Boeing 757 crashes into the water, killing everyone on board. The false readings and contradictory warnings were caused by duct tape over the static ports—the duct tape was used to protect the ports during maintenance, but was not removed afterwards.