Air Ontario Flight 1363 was a scheduled Air Ontario passenger flight which crashed near Dryden, Ontario, on 10 March 1989 shortly after takeoff from Dryden Regional Airport. The aircraft was a Fokker F28-1000 Fellowship twin jet. It crashed after only 49 seconds because it was not able to attain sufficient altitude to clear the trees beyond the end of the runway, due to ice and snow on the wings. A similar accident happened in 1992 when USAir Flight 405 crashed into Flushing Bay on takeoff at LaGuardia Airport, after ice had accumulated on the wings during taxi. Aircraft and crew The aircraft, a Fokker F28-1000, had been manufactured in 1972 and had been in service for Turkish Airlines from 1973 to 1987. The aircraft had been used by Air Ontario since November 1987. It was one of two F28-1000s operated by the airline. The flight was under the command of veteran pilot Captain George Morwood (52). He was an experienced airman who had been flying for approximately 34 years with Air Ontario. He had roughly 24,100 flying hours. His first officer was Keith Mills (35). Mills was also a highly experienced pilot with Air Ontario for 10 years, having accrued more than 10,000 hours of flying time. Both pilots were new to the F28-1000, having fewer than 150 hours between them on the aircraft type. Accident The flight had departed from Thunder Bay bound for Winnipeg with an intermediate stop in Dryden, where the aircraft struck trees shortly after takeoff and then disintegrated on impact. The accident caused the deaths of 21 of the 65 passengers and three of the four crew members on board, including both pilots. Investigation The fierce post-crash fire resulted in severe damage to both the cockpit voice recorder and the flight data recorder; neither of these units could be read as a result. Because of this, the investigative effort relied almost entirely on witness statements regarding the crash and the events leading up to it. The investigation revealed that an unserviceable auxiliary power unit (APU), and no available external power unit at Dryden Regional Airport, led to questionable decision-making, which was a critical factor leading to the crash of Flight 1363. If the engines had been turned off, they could not have been restarted again due to the unserviceability of the APU and lack of external power. Therefore, the port engine was left running during