. >> captain don cameron was at the controls that day.ades he's back in the cockpit of a d.c. 9 at the canada aviation and space museum in ottawa. the breakers are connected to the laboratory in the back of the plane. once they pop out, they cut the flow of electricity to the laboratory 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 might have put a cigarette out in the trash. >> the captain sends his first officer claude to assess the situation. >> so i look back and you couldn't see the back of the airplane