A March 22 runway collision at New York's LaGuardia Airport killed two pilots and severely injured a flight attendant, authorities said.
According to the Port Authority, Jazz Aviation Flight 8646 struck a Port Authority Aircraft Rescue and Firefighting vehicle on Runway 4.
Port Authority Executive Director Kathryn Garcia said it was the airport's first fatal incident in 34 years.
Garcia said the fire truck was crossing the runway to respond to a separate United Airlines flight after a pilot reported an odor issue.
National Transportation Safety Board Chair Jennifer Homendy said the incident likely involved multiple failures. Preliminary findings indicate the ASDE-X runway warning system did not alert because the fire truck lacked a transponder, according to the NTSB.
Investigators are examining why the truck was on the runway as the plane approached and why it did not stop despite urgent air traffic control warnings, the NTSB said.
Flight attendant Solange Tremblay was found on the runway still strapped into her jump seat and remains hospitalized in New York with severe leg and spinal injuries, her daughter said on GoFundMe.
The investigation remains active.