Photo: TIMOTHY A. CLARY / AFP / Getty Images
A new federal report from the National Transportation Safety Board (NTSB) details how a series of safety breakdowns led to the deadly runway collision at LaGuardia Airport in New York City on March 22. According to the NTSB’s preliminary findings, both human decisions and technology failures contributed to the crash that killed two pilots and injured dozens of others.
At about 11:37 p.m., Jazz Aviation Flight 646, operating as Air Canada Flight 8646, was landing when it collided with an airport rescue vehicle crossing Runway 4. The NTSB report, released Thursday, found that the local air traffic controller cleared the rescue vehicle to cross the runway while the plane was just a quarter-mile away and descending to land. Seconds later, realizing the danger, the controller told the rescue vehicle to stop—but the warning came too late. The aircraft touched down and struck the truck, resulting in a devastating collision. Investigators said confusion over radio communications delayed the vehicle crew's response, as they did not immediately realize the warning was meant for them.
According to the NTSB, the control tower had normal staffing with two experienced controllers, but both were handling multiple emergencies at once. The local controller was giving instructions on both ground and tower frequencies, which increased workload and risk of error. Research cited by aviation experts suggests this dual role can cause cognitive overload, especially during busy or late-night shifts, raising the risk of mistakes.
The investigation also highlighted failures in LaGuardia’s technology safeguards. The airport’s surface detection system, ASDE-X, is supposed to track planes and vehicles and warn controllers about conflicts. However, none of the ground vehicles involved had transponders, so the system only showed two out of seven vehicles on its radar. No aural or visual warning was issued to controllers.
Another safety layer, the runway entrance lights (RELs), are meant to alert vehicles not to cross when planes are approaching. Surveillance video shows the RELs were on as the truck approached but turned off about three seconds before the collision, leaving unclear whether the rescue crew saw or responded to the warning (Fox News).
The NTSB's preliminary review found that the cockpit and forward cabin of the aircraft suffered the most damage, but most passengers evacuated safely after the crash. The debris field stretched about 300 feet, and the evacuation was described as chaotic but orderly.
Though the investigation continues, the NTSB says the tragedy at LaGuardia demonstrates how combined human errors, communication breakdowns, and technology limitations can bypass even multiple safety layers. The agency’s final report will provide recommendations to prevent similar incidents in the future.