reset. captain don cameron was at the controls these days. like the old days. he is back in the cockpit of the dc-9 at the space museum in ottawa. the breakers are connected to the lav noir the back lavatory the plane. once they pop out they cut the flow of electricity to the lavatory motor. the crew responded appropriately. there was a problem there and they left the circuit breakers then extended or popped so that it would deprive power to that component, eliminating any potential future problem. unfortunately, flight 797 s problems are just beginning. i think it was about an hour and a half into the flight that there was some commotion in the back of the plane. i remember seeing one of the flight attendants take a fire extinguisher to the back. rumors began going around in the plane that there might be a fire in the trash can, somebody might have put a cigarette out in the trash.
investigators immediately suspect an arcing event. the electricity that is flowing through a wire as, over time, insulation can chaff, crack. and these cracks allow the electricity to not flow down the wire path as it s supposed to, but to jump to a part of the frame of the airplane or to another wire that might be exposed. the lavatory motor is small but carries a lot of power. weight on an airplane is something you try to keep to an absolute minimum. one of the ways that we do that in aircraft is to utilize very small, but very powerful electric motors so that a very small motor can get three boosts of electricity, as it winds around. the motor inside the lavatory is supplied with three phase power, much stronger than a household current. electricity jumping from one of
time, insulation can chaff, crack. and these cracks allow the electricity to not flow down the wire path as it s supposed to, but to jump to a part of the frame of the airplane or to another wire that might be exposed. the lavatory motor is small but carries a lot of power. weight on an airplane is something you try to keep to an absolute minimum. one of the ways that we do that in aircraft is to utilize very small, but very powerful electric motors so that a very small motor can get three boosts of electricity, as it winds around. the motor inside the lavatory is much stronger than a household current. electricity jumping from one of these wires would release an enormous amount of energy and could ignite a fire. investigators do, in fact, find evidence of arcing on the left and right lavatory feeder wires, that come out through holes in
like the old days. for the first time in decades, he is back in the cockpit of a dc-9 at the space museum in ottawa. the breakers are connected to the lavatory in the back of the plane. once they pop out, they cut the flow of electricity to the lavatory motor. the crew responded to that appropriately. there was a problem there, and they left the circuit breakers then extended or popped so that it would deprive power to that component, eliminating any potential future problem. unfortunately, flight 797 s problems are just beginning. i think it was about an hour and a half into the flight that there was some commotion in the back of the plane. i remember seeing one of the flight attendants take a fire extinguisher to the back. rumors began going around in the plane that there might be a fire in the trash can, that somebody
investigators immediately suspect an arcing event. the electricity that is flowing through a wire as, over time, insulation can chaffe, crack. and these cracks allow the electricity to not flow down the wire path as it s supposed to, but to jump to a part of the frame of the airplane or to another wire that might be exposed. the lavatory motor is small but carries a lot of power. weight on an airplane is something you try to keep to an absolute minimum. one of the ways that we do that in aircraft is to utilize very small, but very powerful electric motors so that a very small motor can get three boosts of electricity, as it winds around. the motor inside the lavatory is much stronger than a household current.