Panic erupted on the runway as a routine flight turned into a nightmare in seconds. Two pilots dead. Dozens injured. A jet full of passengers colliding with a truck that never should have been there. Now, a top aviation insider is pointing to one “unforgivable” decision in the control tower that chance.

In the aftermath of the LaGuardia crash, investigators are piecing together the final, chaotic moments before impact. The Bombardier CRJ-900 had been cleared, its crew trusting that the runway was theirs alone. That trust was shattered when the aircraft struck a Port Authority vehicle, killing both pilots and injuring many on board. For the families, the horror is matched only by the belief that it didn’t have to happen.

Former Department of Transportation inspector general Mary Schiavo argues this was not a freak accident, but a preventable breakdown in coordination. Tower and ground control, she says, failed at the one task that matters most: keeping metal from crossing paths. As investigators comb through audio tapes and procedures, a brutal question hangs over LaGuardia: was this tragedy the cost of one critical clearance, given when it never should have been?