A tragic sequence of miscommunication and timing led to a deadly runway collision that has sent shockwaves through the aviation community.
On Mar 22nd 2026, a Jazz Aviation Canadair CRJ-900, registration C-GNJZ, operating flight AC-8646 from Montreal to New York La Guardia with 72 passengers and 4 crew, had been cleared to land on runway 04.
At the same time, a separate emergency involving a United Airlines aircraft reporting an odour on board had prompted the deployment of airport emergency services. Fire truck #1, responding to that situation, requested permission to cross runway 04 at taxiway D and was granted clearance.
Moments later, as the CRJ-900 touched down and began its rollout, the tower urgently transmitted: “Stop! Stop! #1 Stop! Fire #1 Stop!” The warning came too late. At 23:36 local time (03:36Z Mar 23rd), the aircraft collided with the fire truck on the runway. The jet skidded off course, continuing approximately 130 meters before coming to a stop near a high-speed exit.
The consequences were devastating. The captain and first officer lost their lives. Two firefighters aboard the vehicle sustained serious injuries. Among those on the aircraft, nine passengers were seriously injured and 32 others suffered minor injuries.
The airport was immediately closed, with reopening not expected until at least the following afternoon as emergency response and investigative efforts took priority.
The National Transportation Safety Board deployed investigators to the scene and quickly recovered both the flight data recorder (FDR) and cockpit voice recorder (CVR). By Mar 24th, both devices had been transported to Washington and successfully read out, providing crucial insight into the final moments before impact.
According to preliminary findings, the CVR captured over 25 hours of clear audio. The final minutes reveal a routine, stabilized approach. The aircraft was cleared to land and configured normally, with standard callouts marking descent through 1000 feet, 500 feet, and lower altitudes. Meanwhile, confusion was unfolding on the ground.
Just over a minute before impact, a transmission from an airport vehicle was partially blocked by another unidentified transmission. As the aircraft descended below 100 feet, fire truck #1 requested and received clearance to cross the runway. The clearance was read back correctly. Seconds later, with the aircraft only feet above the runway, the tower attempted to cancel the crossing instruction, shouting for the vehicle to stop.
The aircraft touched down just moments later. Six seconds before the end of the recording, control of the aircraft was transferred from the first officer, who had been flying, to the captain—likely in response to the developing hazard. The collision occurred almost immediately after.
Investigators also revealed that multiple emergency vehicles were responding, though the exact number remains unclear. Notably, the lead fire truck did not have a transponder, and it is uncertain whether any of the responding vehicles were equipped with one. Ground radar systems did not display a target ahead of the aircraft on the runway, and no automated alerts were triggered despite two targets appearing on taxiway D.
Staffing in the control tower has also come under scrutiny. At the time of the accident, only two controllers were handling all duties—standard for the midnight shift—though conflicting reports remain about who was managing ground control responsibilities.
The incident involving the United aircraft that triggered the emergency response added further complexity, as that aircraft had reportedly rejected takeoff twice and was dealing with fumes or smoke on board.
As the investigation continues, attention is focusing on communication breakdowns, situational awareness, and procedural safeguards designed to prevent exactly this type of catastrophe. The detailed data recovered from the recorders is expected to play a central role in determining how a routine landing and a routine runway crossing converged into a fatal accident within seconds.