Air Canada Flight 797 was a scheduled trans-border flight that flew from Dallas/Fort Worth International Airport to Montréal–Pierre Elliott Trudeau International Airport with an intermediate stop at Toronto Pearson International Airport. On 2 June 1983, the aircraft developed an in-flight fire behind the washroom that spread between the outer skin and the inner decor panels, filling the plane with toxic smoke. The spreading fire also burned through crucial electrical cables that knocked out most of the instrumentation in the cockpit, forcing the plane to divert to an alternative landing field.