A timeline of the deadly LaGuardia Airport collision
Two pilots were killed and over 40 people were injured in the crash.
Investigators probing the deadly crash between an Air Canada jet and a Port Authority airport vehicle at a LaGuardia Airport runway over the weekend have a fuller picture of what went down after reviewing some of the flight recorder data.
National Transportation Safety Board Chair Jennifer Homendy said Tuesday the agency received preliminary data from the black box of Air Canada Flight 8646 that logged in the final minutes before it struck a rescue-and-firefighting vehicle responding to another aircraft Sunday night.
Two pilots, identified as Captain Antoine Forest and First Officer Mackenzie Gunther, were killed, and at least 41 people were transported to the hospital.
Six individuals remain hospitalized Tuesday, according to an update from Air Canada.
Homendy said there were two people in the air traffic control tower cab at the time of the collision: the local controller and the controller in charge.
ABC News has compiled a timeline of the events minutes before the collision, which occurred around 11:40 p.m. on Sunday, according to preliminary data from the cockpit voice recorder.
Three minutes before the crash: The LaGuardia approach controller instructed the plane to contact the LaGuardia tower controller. Flight 8646 took off from Montreal-Trudeau International Airport roughly 70 minutes earlier, according to flightradar24 data.
Two minutes before the crash: The flight crew lowered its landing gear and checked in with the tower. LaGuardia tower crews cleared the plane to land at runway 4 and advised that they were second in line for a landing.
One minute before the crash: An electronic "1,000 callout" occurred from the enhanced ground proximity warning system that indicated that the plane was 1,000 feet above the ground. The flight crew confirmed the landing checklist was complete.
Roughly nine seconds later, "an airport vehicle made a radio transmission to the tower, but that transmission was stepped on by another radio transmission and the source of who made that transmission has yet to be identified," according to Doug Brazy, an NTSB aviation accident investigator.
The final seconds before the crash: The crew acknowledged that their plane was 500 feet above the ground and on a stable approach. About 14 seconds later, the LaGuardia tower asked which vehicle needed to cross a runway.
The truck made a radio transmission to the tower 12 seconds later, acknowledged the tower's transmission and requested to cross runway 4 at taxiway delta, Brazy said.
The tower took five seconds to clear the truck to cross runway 4, according to the preliminary data. Less than a second after the tower call, an electronic 100 enhanced ground proximity warning system callout occurred.
A second later, roughly 17 seconds before the crash, the truck read back the runway crossing clearance.
Electronic callouts continued for the next few seconds, according to Brazy. Around nine seconds before the crash, the LaGuardia tower instructed the truck to stop.
At eight seconds, there was a sound consistent with the plane's landing gear touching down on the runway.
At six seconds, the first officer transferred the control to the captain and four seconds before the crash and just before the recording ends, the tower again instructed the truck to stop.