An Air Canada jet ran off the runway into the grass after landing from Los Angeles.

Heavy rain was falling as a long-haul flight from the West Coast touched down, and for a few tense minutes the arrival went from routine to anything but. Instead of taxiing smoothly to the gate, the jet slid off the paved surface and came to a stop in the grass alongside the runway, leaving passengers to wait it out on board while ground crews assessed the situation.

The aircraft involved was operating as a scheduled service that had originated in Los Angeles, carrying more than 150 people when it landed. What began as a normal arrival ended with the plane parked well off the intended path, its wheels sunk into wet turf rather than rolling toward the terminal.

What happened during the landing

The flight touched down during a period of intense rainfall, according to reporting on the incident, and appeared to land without difficulty before the trouble began. The excursion occurred not during the touchdown itself but while the aircraft was exiting the runway, when it left the paved surface and traveled through the adjacent grass rather than following the taxiway back toward the terminal. Wet pavement, standing water, and reduced braking friction are common contributing factors in runway excursions of this kind, though airlines and safety investigators typically avoid assigning a specific cause until data from the flight recorders and a physical inspection of the runway and aircraft have been reviewed.

No injuries were reported among the passengers or crew, a detail that safety officials often point to as evidence that an excursion at low taxi speed, rather than during landing rollout at higher speed, carries substantially lower risk even when it looks alarming from the cabin.

Why passengers were stuck for hours

Because the aircraft came to rest off the paved surface, ground crews could not simply bring a jet bridge or stairs to the doors the way they would for a normal gate arrival. Passengers remained on board for an extended period, roughly three hours in this case, while airport operations staff worked out how to safely deplane everyone without risking injury on soft, wet ground near an aircraft that may still have had fuel and hydraulic systems that needed to be secured first.

Extended tarmac delays like this one are uncomfortable for travelers but are treated as a secondary concern behind making sure the aircraft itself is stable and that any evacuation, if needed, could be conducted safely. Airports have established procedures for towing or extracting a jet that has left the paved surface, but those procedures move deliberately rather than quickly, since improperly rushing heavy equipment near a stranded aircraft creates its own hazards.

The ripple effect on the airport

A runway excursion forces at least a temporary closure of the affected surface while investigators and recovery crews do their work, and that closure was enough to create knock-on delays across the airport’s schedule. Flights bound for other Canadian and domestic destinations saw shorter delays, while international departures, including flights headed to the United States, faced longer waits as controllers rerouted arrivals and departures around the blocked runway.

These cascading delays are one reason airports and airlines treat even a low-speed, no-injury excursion as a significant operational event rather than a minor mishap. A single blocked runway during a busy travel period can back up an entire day’s schedule, particularly at airports that rely on that runway for a large share of arrivals.

How excursions like this get investigated

Runway excursions, even ones without injuries, typically trigger a formal safety investigation. Regulators examine flight data and cockpit voice recordings, inspect the runway surface and lighting, and review the crew’s approach and rollout to determine whether weather, mechanical factors, or a combination of both played a role. In Canada, incidents of this kind fall under the purview of the Transportation Safety Board, the independent agency responsible for investigating aviation occurrences and issuing findings meant to prevent recurrence rather than assign blame.

Airlines generally cooperate closely with these investigations, since the findings can lead to recommendations covering everything from runway drainage and grooving to changes in how crews are briefed on landing in heavy rain. Boeing 737 Max aircraft, like the one involved in this incident, have extensive data-recording capability that investigators can use to reconstruct the exact sequence of events during the landing rollout and exit.

What happens next for the airline

Air Canada said it would work with the relevant authorities to determine what caused the aircraft to leave the paved surface, a standard commitment airlines make while an investigation is underway. In the meantime, the aircraft itself would typically remain out of service for inspection, since any excursion into soft or uneven ground carries a risk of underside damage, tire and brake wear, or landing-gear stress that needs to be ruled out before the jet returns to passenger service.

For travelers booked on flights through the affected airport in the days following the incident, the more immediate impact was schedule disruption rather than any lasting safety concern. Runway excursions at taxi speed, while dramatic to witness, are among the more survivable categories of aviation incidents precisely because they typically occur well after the high-risk phase of landing has already concluded safely.

What history says about similar incidents

Runway excursions during taxi and rollout are not unheard of at airports that see frequent heavy rainfall, and safety researchers have long flagged wet-weather operations as a period of elevated risk even when an aircraft lands well within the marked runway distance. Water pooling on a taxiway surface, particularly near drainage grates or areas with uneven grading, can reduce a jet’s directional control at low speed in ways that are difficult for a flight crew to anticipate until the wheels are already on the affected section. Airports with a documented history of drainage issues sometimes see recurring excursions in the same general area, which is one reason investigators pay close attention to exactly where along the runway or taxiway a departure from the paved surface begins.

Because this incident caused no injuries and only modest airframe exposure to soft ground, it is likely to be resolved through a standard safety investigation rather than the kind of extended grounding order that follows a more serious runway event. Even so, airlines and airport operators alike tend to treat every excursion as an opportunity to review procedures, since a low-speed incident today can reveal a drainage, lighting, or signage issue that might contribute to a more serious event under slightly different conditions in the future.

Morning Overview produced this article with AI assistance and reviewed it against the cited sources.

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