Excruciating final 3 minutes before deadly LaGuardia plane crash

Doomed Air Canada Flt. 8646’s cockpit recorder has revealed how the flight turned from routine to tragedy within 3 minutes Sunday.

Both the pilot and co-pilot were killed and more than 40 other people injured when the jet crashed into a fire truck at LaGuardia Airport in New York City around midnight.

NTSB senior aviation investigator Doug Brazy shed some light on the plane’s harrowing final minutes Tuesday, providing a detailed timeline starting with the flight crew contacting the Air Traffic Control tower up until the moment of the deadly crash:

• At 3 minutes and 7 seconds before the flight from Montreal touched down in New York, the approach controller instructed the airplane to contact LaGuardia tower.
• 2 minutes, 45 seconds: Flight crew lowers landing gear.
• 2 minutes, 22 seconds: Flight Crew checks in with LaGuardia air-traffic control.
• 2 minutes, 27 seconds: LGA tower clears the airplane to land on Runway 4 and advises they are second in line for landing.
• 1 minute, 52 seconds: Flight crew sets the flaps to 30 degrees.
• 1 minute, 33 seconds: Flight crew sets the flaps to 45 degrees.
• 1 minute, 26 seconds: An electronic “1,000” callout occurs from the enhanced ground proximity warning system, indicating the airplane is 1,000 feet above the ground
• 1 minute, 12 seconds: Flight crew confirms the landing checklist is complete.

• 1 minute, 3 seconds: An airport vehicle makes a radio transmission to the tower, but that transmission is blocked by another radio transmission by a source yet to be identified.
• 54 seconds: Flight crew acknowledges the airplane is 500 feet above the ground and on a stable approach.
• 40 seconds: LGA tower asks which vehicle needs to cross a runway.
• 28 seconds: Truck 1 makes a radio transmission to the tower.
• 26 seconds: Tower acknowledges that radio transmission.
• 25 seconds: Truck 1 requests to cross Runway 4.
• 20 seconds: Tower clears Truck 1 and company to cross Runway 4.
• 19 seconds: An electronic “100” enhanced ground proximity warning system callout occurs, meaning the plane is now 100 feet above the ground.
• 17 seconds: Truck 1 reads back the runway crossing clearance.
• 14 seconds: Electronic “50” callout.
• 12 seconds: Electronic “30” callout.
• 12 seconds: Tower instructs a Frontier Airlines flight to hold position.
• 11 seconds: Electronic “20” callout occurs.
• 10 seconds: Electronic “10” callout.
• 9 seconds: Tower instructs Truck 1 to stop.
• 8 seconds: Sound consistent with airplane’s landing gear touching down on the runway is heard.
• 6 seconds: Pilot transfers controls from one pilot to the other.
• 4 seconds: Tower again instructs Truck 1 to stop
• 0 seconds: Recording ends.

A FlightRadar24 rep has told The Post that the Air Canada jet, which originated from Montreal, was traveling as fast as 105 mph when it smashed into the fire truck, as seen in shocking video footage.