Eighteen minutes after Air Canada Express Flight 8646 collided with a Port Authority fire truck on Runway 4 at LaGuardia Airport, an air traffic controller was heard on frequency saying, to a pilot taxiing on the ground: "I messed up." The recording has circulated across aviation forums and mainstream news platforms since early Monday morning, and it has become the defining sound bite of an investigation that hasn't officially concluded anything yet. What it reveals — and what it doesn't — is worth understanding carefully.
The sequence of events, reconstructed from ATC audio and preliminary accounts, goes like this: Fire Truck 1 requested clearance to cross Runway 4 at taxiway Delta. The ground controller granted that clearance. The truck began crossing. Seconds later, a controller realized Flight 8646 was on final approach to the same runway and urgently ordered the truck to stop. The truck did not stop in time. The Bombardier CRJ900 struck it at between 93 and 105 mph, destroying the cockpit and killing both pilots.
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