Gimli Glider

Gimli Glider
FAA · Public domain · source
Name	Gimli Glider
Occurrence type	Accident
Date	23 July 1983
Site	Gimli, Manitoba, Canada
Aircraft	Boeing 767-200
Operator	Air Canada
Origin	Montréal–Dorval International Airport
Destination	Edmonton International Airport
Occupants	61
Passengers	57
Injuries	9 (minor)

Gimli Glider The Gimli Glider refers to the Boeing 767-200 incident on 23 July 1983 in which an Air Canada passenger jet ran out of fuel mid-flight and made an unpowered landing at a former Royal Canadian Air Force base at Gimli, Manitoba. The event involved crew members from Air Canada, investigators from the Transportation Safety Board of Canada, and rescue personnel from RCAF Station Gimli and local Manitoba emergency services. The incident influenced aviation procedures at Boeing, regulatory practices at Transport Canada, and training at airline operators worldwide.

Background and Flight Details

Flight 143 departed Montréal–Dorval International Airport bound for Edmonton International Airport, operated by an Air Canada Boeing 767-200 series aircraft delivered new to the carrier. The flight crew included a captain and first officer experienced with widebody operations and a relief crew familiar with long-haul procedures. During climb and cruise over Ontario and Manitoba, the aircraft's fuel quantity indicators were suspected faulty; as the engines flamed out at cruising altitude the crew initiated gliding procedures and began an emergency descent toward their planned destination. The crew diverted to the decommissioned RCAF Station Gimli airstrip after radio calls with Air Traffic Control units at Edmonton Centre and communications with operators at Montreal Center and Nav Canada facilities revealed limited options. The aircraft landed on a former runway where spectators later gathered from Gimli, Manitoba and surrounding communities.

Causes and Investigation

Investigators from the Transportation Safety Board of Canada determined root causes involving fuel management, maintenance, and human factors. Fuel was miscalculated during refueling at Montréal–Dorval International Airport due to a conversion error between metric and imperial units after recent changes in procedures and documentation from Air Canada and Transport Canada. Contributing factors included inoperative fuel quantity indication systems, maintenance actions documented under Airworthiness Directives issued by Transport Canada and communication lapses between ramp crews, flight crew, and fuel suppliers. The investigation reviewed Boeing design documentation, maintenance records, and operational manuals from Air Canada, and made recommendations to Boeing, Transport Canada, and international authorities such as the Federal Aviation Administration and the International Civil Aviation Organization.

Emergency Response and Crew Actions

The flight crew employed airmanship taught in airline training syllabi used by Air Canada and recommended by Boeing and Transport Canada. After dual engine flameout, the crew conducted engine restart attempts, selected an emergency landing site, and used radio calls to coordinate with Air Traffic Control and local emergency services. The handling of the aircraft followed procedures similar to those in manuals from Boeing and checklist practices from Air Canada training programs; decisions by the captain and first officer were later examined by the Transportation Safety Board of Canada and praised by aviation peers from carriers including British Airways, Lufthansa, and Japan Airlines. Ground responders from Gimli Fire Department, Royal Canadian Mounted Police, and St. John Ambulance assisted passengers and coordinated with base personnel at the former RCAF Station Gimli.

Aircraft and Technical Aspects

The airframe was a twin-engine Boeing 767-200 equipped with turbofan engines produced under Pratt & Whitney licensing and systems designed by Boeing engineering teams. The incident highlighted issues with fuel quantity indication systems, electronic fuel gauging, and the importance of redundancy in system architecture recommended by Federal Aviation Administration advisory circulars and International Civil Aviation Organization standards. Maintenance records reviewed during the investigation included entries referencing Airworthiness Directive compliance and component replacements authorized under Transport Canada oversight. Engineering analyses by Boeing and independent consultants examined glide performance, descent profiles, and emergency landing dynamics for widebody aircraft types.

Aftermath and Legacy

The event led to procedural and regulatory changes implemented by Air Canada, Transport Canada, the Federal Aviation Administration, and international regulators such as International Civil Aviation Organization. Revisions included clearer fuel calculation protocols, mandatory cross-checks for metric-imperial conversions, enhanced training on fuel management and dual-engine-out procedures, and improvements to fuel quantity indication systems by manufacturers like Boeing and Pratt & Whitney. The flight crew received public recognition from airline industry groups and aviation publications; the incident has been featured in documentaries and studies by institutions including Smithsonian Institution-affiliated programs, Flight Safety Foundation analyses, and case studies in Montreal and Edmonton aviation training curricula. The aircraft was repaired, returned to service with Air Canada, later operated by other carriers, and its story remains a touchstone in aviation safety seminars and conferences hosted by organizations such as International Air Transport Association and Royal Aeronautical Society.

Category:Aviation accidents and incidents in Canada Category:Air Canada Category:Boeing 767