Flight Recorder
The flight recorder provides a permanent record of selected operational and systems
information such as altitude, heading, acceleration, and airspeed. The recorder is housed
in a sealed, fire–resistant container located behind an access door in the aft cabin ceiling.
Operational and systems information is automatically recorded whenever the flight recorder
is powered. On the ground, the recorder begins operating when one of the engines is
operating. In the air, the flight recorder is powered even with both engines shut down as
long as APU electrical power is available.