British Airways Slide Deploys, Flight Delayed in Montreal

Montreal Departure Disruption for Flight BA94

A British Airways flight, BA94, travelling from Montreal to London Heathrow, faced a three-and-a-half-hour delay on Friday night, 5 September 2026, following an unexpected deployment of an emergency evacuation slide. The incident occurred as the Boeing 787-10 Dreamliner, registered G-ZBLA, was preparing for its departure from Montreal.

A ground service vehicle was positioned alongside the aircraft at the time, and the slide inadvertently extended onto a catering truck. Fortunately, the deployment did not cause the truck to topple or injure any ground personnel, according to reports. British Airways later issued an apology to its customers for the disruption to their travel plans.

Operational Response and Passenger Re-accommodation

Following the incident, engineers were required to remove the deployed slide from the aircraft. Safety placards were then placed at the affected door, indicating that it could not be used in an emergency. Despite the disruption, British Airways did not cancel the flight, allowing passengers to continue their journey on the same aircraft.

However, to comply with aviation safety regulations governing the ratio of available emergency exits to the number of passengers, some individuals may have been offloaded from the flight. British Airways stated its teams worked diligently to minimise the delay and get passengers en route as swiftly as possible.

Causes and Global Industry Context

Inadvertent slide deployments (ISDs) are a relatively common occurrence in global aviation, with aircraft manufacturer Airbus indicating they happen daily worldwide. These events can lead to serious injury, particularly when ground equipment is near the aircraft during deployment.

While aircraft doors are designed to automatically disarm the slide when opened from the exterior by ground personnel, an ISD during departure suggests the door was opened from the interior while still in the armed position.

Common factors contributing to such incidents include crew fatigue, unfamiliarity with specific aircraft door mechanisms, or confusion among new crew members regarding door operations.

Implications for Asian Carriers and Safety Protocols

This incident underscores the continuous need for stringent safety protocols across the aviation industry, a lesson particularly pertinent for Asian carriers experiencing rapid growth and increasing operational complexities.

British Airways itself has previously introduced enhanced procedures, adopting the Japanese 'point and call' method, where cabin crew are required to physically point at doors multiple times while verbally confirming their actions. This technique aims to boost crew concentration during critical tasks like arming or disarming doors.

Asian airlines can benefit from reviewing and reinforcing their own operational safety training, ensuring their crews are thoroughly familiar with aircraft-specific door mechanisms to prevent similar disruptions and maintain high safety standards in a competitive global market.