Nigeria Airways Flight 2120
C-GMXQ, the aircraft involved in the accident, is seen here at Faro Airport in 1989.
|Date||11 July 1991|
|Summary||Under-inflated tire which overheated, shortly-after-takeoff fire|
|Site||King Abdulaziz International Airport, Jeddah, Saudi Arabia
|Aircraft type||Douglas DC-8-61|
|Operator||Nationair on behalf of Nigeria Airways|
|Flight origin||King Abdulaziz International Airport, Jeddah, Saudi Arabia|
|Destination||Sadiq Abubakar III International Airport, Sokoto, Nigeria|
Nigeria Airways Flight 2120 was a chartered passenger flight from Jeddah, Saudi Arabia, to Sokoto, Nigeria. On 11 July 1991, the aircraft serving this flight, a Douglas DC-8 operated by Nationair, crashed shortly after takeoff from King Abdulaziz International Airport, killing all 247 passengers and 14 crew members on board. It is the deadliest accident involving a DC-8.
Aircraft and crew
The aircraft involved in the accident was a 1968-built Douglas DC-8-61, registration C-GMXQ, owned by the Canadian company Nolisair, and usually operated by Nationair; at the time of the accident, it was being wet-leased to Nigeria Airways, which in turn sub-leased it to another company to transport Nigerian pilgrims to and from Mecca. William Allan, the 47-year-old pilot in command, had logged 10,700 flight hours and 1000 hours in type, while Kent Davidge, the 36-year-old first officer, had logged 8,000 flight hours, of which 550 hours were in type, and Victor Fehr, the 46-year-old flight engineer, had logged 7,500 flight hours, of which 1000 hours were in type. The DC-8 was the primary aircraft type used by the airline.
The aircraft departed King Abdulaziz International Airport bound for Sadiq Abubakar III International Airport in Sokoto, but problems were reported shortly after takeoff. The crew attempted to return to the airport for an emergency landing, but the aircraft caught fire, experienced an inflight break-up, and crashed 2,875 metres (9,432 ft) short of runway 34L. When the aircraft was about 18 kilometres (11 mi) from the airport and at an altitude of 671 metres (2,201 ft), a number of bodies fell from it, indicating that the fire by that time had consumed, at least partially, the cabin floor. All 261 occupants on board—including 247 passengers—perished in the accident. As of July 2014[update], the accident remains the deadliest one involving a Douglas DC-8, as well as the second deadliest one taking place on Saudi Arabian soil, after Saudia Flight 163.
Prior to departure, the lead mechanic had noticed that the "#2 and No. 4 tyre pressures were below the minimum for flight dispatch" and attempted to inflate them, but no nitrogen gas was readily available, and the project manager, unwilling to accept a delay, disregarded the problem and readied the aircraft for dispatch. As the aircraft was taxiing, the transfer of the load from the under-inflated No. 2 tire to the No. 1 tire on the same portside axle resulted "in overdeflection, over-heating and structural weakening of the No. 1 tyre." "The No. 1 tyre failed very early on the take-off roll", followed almost immediately by the No. 2. The latter stopped rotating "for reasons not established", and the subsequent friction of the wheel assembly with the runway generated sufficient heat to start a self-sustaining fire. The crew realised there was a problem, but not the nature or seriousness of it. The aircraft was not equipped with fire or heat sensors in the wheel assembly. The first officer was recorded remarking, "We gotta flat tire, you figure?" According to Canadian Transportation Safety Board members interviewed for an episode of Mayday about the accident, standard procedures regarding tire failure during the takeoff roll on the DC-8 did not then (and still did not as of the episode's season 11 airing) include rejecting takeoff for tire or wheel failures, so the captain proceeded with the takeoff.
When the landing gear was retracted, "burning rubber was brought into close proximity with hydraulic and electrical system components", causing the failure of both hydraulic and pressurisation systems that led to structural damage and loss of control of the aircraft. The Transportation Safety Board later concluded, "had the crew left the landing gear extended, the accident might have been averted". Fuel, "probably introduced as a result of 'burn through' of the centre fuel tank", intensified the fire, which eventually consumed the cabin floor. People began falling out of the aircraft when their seat harnesses burned through. "Despite the considerable destruction to the airframe, the aircraft appeared to have been controllable until just before the crash."
A memorial to the incident is located at the head office of Greater Toronto Airports Authority on the grounds of Toronto Pearson International Airport in Mississauga, Ontario. The construction of the memorial, which includes a plaque and a cherry tree, was paid for by a group of Nationair flight attendants shortly after the accident.
The aircrash, combined with Nationair's poor reputation for on-time service and mechanical problems, led to serious problems with public image and reliability among tour operators. These difficulties were compounded when Nationair locked out its unionised flight attendants and proceeded to replace them with strikebreakers on 19 November 1991. The lock-out lasted 15 months and by the time it ended in early 1993, Nationair found itself in severe financial trouble. At the time, Nationair owed the Canadian government millions of dollars in unpaid landing fees. Creditors began seizing aircraft and demanded cash up front for services. The company was declared bankrupt in May 1993, owing CDN$75 million.
- Swissair Flight 306 – A 1963 crash caused by an inflight fire triggered by a landing gear failure on takeoff
- Air France Flight 4590 – A 2000 Concorde crash caused by an inflight fire triggered by tire burst on takeoff
- Mexicana Flight 940 – A 1986 crash involving landing gear fire
- Air safety
- List of notable accidents and incidents on commercial aircraft
- List of accidents and incidents on commercial airliners grouped by location
- Accident description at the Aviation Safety Network. Retrieved on 11 April 2013.
- "Airline safety review – Fatal accidents: Non-scheduled passenger flights" (PDF). Flight International: 22. 29 January 1992 – 4 February 1992. Archived from the original on 15 June 2012. Retrieved 15 June 2012. Check date values in:
- "Headlines – Confusion over Saudi DC-8 crash". Flight International 140 (4276): 4. 17–23 July 1991. ISSN 0015-3710. Archived 13 January 2015 at the Wayback Machine
- "Tire Failure on Takeoff Sets Stage for Fatal Inflight Fire and Crash". Flight Safety Foundation. September 1993. Archived from the original on 16 June 2012. Retrieved 24 November 2012.
- "IMDB: Mayday (Under Pressure)". Internet Movie Database. 27 January 2013.
- "Nationair Crash Memorial Page". Nationair Canada History on the Web. 27 January 2013.[unreliable source?]
- "Mayday: Under Pressure" – Interview of William Fowler, former Nationair Vice President of Flight Operations, about 3:27–3:41, "The DC-8 was the primary aircraft for Nationair."
- "Catastrophe aérienne de Djeddah: 261 morts." [Jeddah air crash: 261 dead]. Le Monde (in French). 13 July 1991. Archived from the original on 15 June 2012. Retrieved 15 June 2012.
- "Accident record for the Douglas DC-8". Aviation Safety Network. Retrieved 27 July 2014.
- Accident description for HZ-AHK at the Aviation Safety Network. Retrieved on 24 June 2012.
- "Mayday: Under Pressure". discoverychannel.ca. Retrieved 6 August 2012.
- "Anniversary of Nationair plane crash passes quietly". CTV News. The Canadian Press. 10 July 2011. Archived from the original on 15 August 2013.
- "Nationair plie bagages" (in French). CBC Digital Archives. 12 May 1993. Archived from the original on 19 March 2014.
- "Robert Obadia doit verser 234 000 $ à ses créanciers" – Radio-Canada Nouvelles:
- Cockpit Voice Recorder Database
- Nationair history site
- Accident history for King Abdulaziz International Airport at Aviation Safety Network