How close was the JFK near miss in April 2024? According to the National Transportation Safety Board's final report, released this week, it came down to three words: "one at each." Two air traffic controllers in JFK's tower understood that phrase differently, and a Swiss International Air Lines plane heading for Zurich had to abort its takeoff while four other planes were cleared to cross its runway. Nobody was hurt and no planes were damaged. But the report shows how easily a quick bit of shorthand can put several planes on the same strip of pavement at once.
What Happened
On the afternoon of April 17, 2024, Swiss flight 17, an Airbus A330, was rolling down one of JFK's runways. At the same moment, four planes that had just landed on a parallel runway were heading for the gate. To get there, they had to cross the runway the Swiss plane was using. They were two Delta flights, a Republic Airways regional plane and an American Airlines Boeing 737 MAX.
The Swiss pilots spotted the traffic ahead and stopped their takeoff at about 50 knots, around 58 mph. The closest plane, a Delta Boeing 767, was still about 4,700 feet away, or just under a mile. That's a comfortable gap at taxi speed, but not much of one for a widebody plane that's trying to get airborne.
The Three Words
JFK's tower splits the work between controllers. One was handling departures on the Swiss plane's runway, and another was handling the planes that needed to cross it. When the two coordinated, one of them said, "Roger, behind the departure, I'll go one at each."
He meant the crossing planes could go after a Delta plane that had just been cleared for takeoff. His colleague took "the departure" to mean the Swiss plane, which was next in line. JFK's own procedures don't allow that kind of shorthand, and the instruction to the crossing planes didn't repeat the key condition that they had to wait for the Swiss plane. That's how both controllers ended up with a perfectly reasonable, and completely different, picture of what was supposed to happen next.
The NTSB also noted that the conversation between the two controllers wasn't recorded, so investigators had to piece it together from interviews. It's the kind of detail that makes these reports read a little like detective work.
Why the Alarm Didn't Go Off
JFK has a ground radar system built to warn controllers when two planes are about to end up on the same runway. It stayed quiet. The system only treats a plane as departing once it reaches a certain speed, and the Swiss plane stopped before it got there. The NTSB said the system worked exactly as it was designed to, which is a little less reassuring than it sounds.
In the end, the safety net that worked was the oldest one, the pilots looking out the window. The Swiss crew saw the planes ahead and hit the brakes before anyone had to be told.
What It Means for You
Runway close calls like this are rare, and the system almost always catches mistakes before they turn into accidents. But this report lands at a sensitive time. A string of close calls in 2023, including one at JFK, pushed the FAA to hold a safety summit, and New York's airports have spent much of this year short on controllers. Busier runways and stretched staff leave less room for a misunderstood phrase.
It also isn't the only report like this out this week. Investigators in India just traced a near-miss at Goa's airport, where an Air India Express plane rolled onto a runway as a Navy fighter plane took off, to two misheard words of its own. Next time your captain says you're waiting on "traffic crossing the runway," you'll know just how much careful talking is happening behind that short pause.
