Allan subsequently contacted air traffic control multiple times, variably declaring an emergency, reporting flight control difficulties, and telling the controller the plane was on fire. At this moment, the air traffic controller realized that Flight 2120 was not the Saudia flight and was in trouble, and directed them towards the runway. Shortly afterwards, Davidge reported that he had lost ailerons, forcing Allan to take control as Allan took over, the cockpit voice recorder failed. The crew only became aware of the fire when a flight attendant rushed into the cockpit reporting "smoke in the back. Īmidst this, First Officer Davidge, who had been flying C-GMXQ out, reported that he was losing hydraulics, prompting the crew to request a return to the airport for an emergency landing. This mix-up, a result of Captain Allan mistakenly identifying as "Nationair 2120" rather than "Nigerian 2120," lasted for three minutes, but was ultimately found not to have had any effect on the outcome. In response to the pressurization failure, Allan decided to remain at 2,000 ft (610 m), but the flight was cleared to 3,000 ft (910 m) as a result of the controller mistaking Flight 2120 for a Saudia flight that was also reporting pressurization problems. Pressurization failed quickly, and the crew was deluged with nonsensical warnings caused by fire-related circuit failures. Unknown to the crew, the aircraft had caught fire during departure, and though the fire was not obvious, since it started in an area without fire warning systems, the effects were numerous. The aircraft departed King Abdulaziz International Airport bound for Sadiq Abubakar III International Airport in Sokoto, but problems were reported shortly after takeoff. Victor Fehr, the 46-year-old flight engineer, had logged 7,500 flight hours, of which 1,000 hours were in type. Kent Davidge, the 36-year-old first officer, had logged 8,000 flight hours, of which 550 hours were in type, and was the pilot flying on the accident flight. William Allan, the 47-year-old captain, a former Royal Canadian Air Force pilot, had logged 10,700 flight hours and 1,000 hours in type. At the time of the accident, it was being wet-leased to Nigeria Airways, which in turn subleased it to Holdtrade Services to transport Nigerian pilgrims to and from Mecca. The aircraft involved in the accident was a 1968 Douglas DC-8-61, C-GMXQ, owned by the Canadian company Nolisair, usually operated by Nationair Canada. Flight 2120 is the deadliest accident involving a DC-8 and remains the deadliest aviation disaster involving a Canadian airline. The aircraft was a Douglas DC-8 operated by Nationair Canada for Nigeria Airways. Nigeria Airways Flight 2120 was a chartered passenger flight from Jeddah, Saudi Arabia, to Sokoto, Nigeria, on 11 July 1991, which caught fire shortly after takeoff from King Abdulaziz International Airport and crashed while attempting to return for an emergency landing, killing all 247 passengers and 14 crew members on board. Sadiq Abubakar III International Airport, Sokoto, Nigeria Nationair Canada on behalf of Nigeria Airways Under-inflated tire overheating, leading to an in-flight fire C-GMXQ, the aircraft involved, photographed in 1989
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