Here's what investigators say happened in the three minutes before the crashpublished at 19:30 GMT 24 March
Official details cockpit voice recorder audio
The news conference at LaGuardia Airport just took us through a detailed timeline of the three minutes leading up to Sunday's Air Canada plane crash, including what investigators have heard on the cockpit voice recorder.
Here is a full timeline of what investigators say happened:
3 minutes, 7 seconds - Air Canada pilots are instructed to contact LaGuardia tower
2 minutes, 45 seconds - Aircraft lowers its landing gear
2 minutes, 22 seconds - Flight crew checks in with LaGuardia tower
2 minutes, 17 seconds - Tower clears plane to land on runway 4
1 minutes, 12 seconds - Flight crew confirms landing checklist complete
1 minute, 3 seconds - Airport vehicle makes transmission to the tower, but transmission was "stepped on" by another unidentified radio transmission
54 seconds - Flight crew acknowledges plane was 500 feet (152m) above the ground and on a stable approach
40 seconds - LaGuardia tower asks which vehicle needed to cross a runway
28 seconds - Truck 1 makes radio transmission to the tower
25 seconds - Truck 1 requests to cross runway 4
20 seconds - Tower clears Truck 1 to cross runway 4
9 seconds - Tower instructs Truck 1 to stop
8 seconds - Sound consistent with airplane landing
4 seconds - Tower again tells Truck 1 to stop moving
0 seconds - Recording ends