The collision between an arriving Air Canada regional jet and an airport fire truck closed LaGuardia, diverted flights and raised urgent questions about runway control during an emergency response.
NEW YORK, N.Y. — The fatal collision between an Air Canada regional jet and a Port Authority fire truck at LaGuardia Airport late Sunday sent shock through the New York air system, shutting one of the region’s busiest airports and exposing what appears to be a breakdown in runway coordination during an emergency call.
By Monday morning, the disaster was being examined on two tracks at once. Investigators were reconstructing the final seconds before the impact that killed the pilot and co-pilot of Flight 8646, while airlines, airport officials and travelers dealt with a widening chain of cancellations and diversions. The immediate stakes reached far beyond the wrecked aircraft and overturned truck on Runway 4. LaGuardia’s closure squeezed an already busy spring travel schedule, shifted flights to nearby airports and turned controller communications into a central piece of the federal inquiry.
The collision happened shortly after the Air Canada Express flight arrived from Montreal with 72 passengers and four crew members aboard, officials said. The aircraft, a Bombardier CRJ-900 operated by Jazz Aviation, had landed and was rolling down Runway 4 when it struck a Port Authority Aircraft Rescue and Firefighting vehicle. Port Authority officials said the truck had been responding to a separate incident involving a United Airlines flight whose crew reported an odor onboard. According to radio traffic described by officials and local coverage, the truck had requested and received permission to cross the runway at taxiway Delta. Then, in the final moments, a controller could be heard urgently trying to halt the vehicle. “Stop, Truck 1. Stop,” the controller said, according to the recorded transmission.
That sequence is likely to define the first phase of the NTSB investigation. Federal officials will want to know when the crossing clearance was issued, whether the landing aircraft’s position was fully understood, what warning systems were available and whether the emergency on the United flight added pressure or confusion inside the tower. Officials have said the truck was on an authorized response to another problem, not moving at random across the field. But authorization alone does not settle the larger question of how a runway stayed open to both a landing jet and a ground vehicle at the same time. A later radio transmission in which a controller appeared to say, “I messed up,” added to public scrutiny, though investigators will review full recordings and procedures before drawing conclusions.
The operational fallout was immediate. LaGuardia closed until at least 2 p.m. Monday, stranding travelers, filling terminals with delayed passengers and prompting airlines to waive change fees on canceled trips. Electronic departure boards showed long rows of cancellations as passengers queued for updates. Some flights were diverted to Newark Liberty International Airport, but that relief valve weakened when Newark briefly halted operations Monday morning after controllers evacuated the tower because of a burning smell, according to the FAA. The result was a rare double strain on two major New York area airports in the same morning. For carriers and airport managers, even a temporary closure at LaGuardia can scramble aircraft rotations, crews and gates across the Northeast for the rest of the day.
The human toll remained at the center of the response. Officials said the pilot and co-pilot were killed and 41 other people were taken to hospitals. By later Monday morning, most of those patients had been released, though several remained seriously injured. Two Port Authority officers in the fire truck were hospitalized in stable condition. Officials said all passengers had been accounted for. The images from the scene showed why survivors were treated as fortunate. The plane’s nose was torn open and bent upward, with wiring exposed, while the rescue truck ended up on its side off the runway. The crash force was severe enough that early reporting cited the aircraft’s speed during the collision at roughly 93 to 105 mph.
For travelers, the scene inside and outside the terminals was a mix of uncertainty and exhaustion. Some had arrived hours early because of broader airport slowdowns tied to the busy travel period, only to find themselves caught in a full shutdown. Others learned from airline text alerts that their planes had been diverted or canceled while emergency crews still worked on the runway. Arturo Davidson, a passenger at the airport, said people on his aircraft saw the crash and then watched the schedule collapse around them. Officials offered condolences and practical updates, but few firm answers were available beyond the airport’s earliest possible reopening time. New York Gov. Kathy Hochul said her thoughts were with the victims and those affected, while the Port Authority said its focus remained on families, patients and investigators.
As of Monday, the next milestones were the airport’s planned afternoon status update and the NTSB’s first public accounting of what happened in the tower and on Runway 4. Until then, the crash stood as both a deadly accident scene and a warning about how quickly a single runway mistake can spread across an entire region’s air network.
Author note: Last updated March 23, 2026.