When should airports close runways?
THE rough landing of a Delta jetliner at New York City’s LaGuardia Airport in a driving snowstorm just minutes after the runway had been plowed has raised questions about when airports should close runways due to snow or ice.
Six people were hurt when the plane skidded off a runaway midday Thursday and crashed through a chain-link fence, its nose stopping just feet from the roiling waters of an icy bay.
There’s no rule about how much snow or ice leads to a runway closing. Instead, the Federal Aviation Administration requires airports to measure runways during winter storms to assure planes can safely brake. A specially equipped vehicle races down the runway with a computer checking braking action, and if the runway fails the test it must be closed.
The runway had been plowed minutes before, and two other pilots had reported good braking conditions, said Patrick Foye, executive director of the Port Authority of New York and New Jersey, which runs the airport. It appeared the pilot did everything he could to slow the aircraft, he said.
“The plane did not make contact with the water,” Foye said. “Happily, that was not a risk today.”
The National Transportation Safety Board said it was sending an investigator to retrieve the plane’s flight data and cockpit voice recorders and to document damage to the plane.
LaGuardia, known for its disconcertingly close proximity to the bay, is one of the most congested airports in the United States. It’s also one of the most difficult at which to land — its close proximity to three other busy airports means pilots have to make a series of tight turns to line up with its runways while also going through their landing checklists.
LaGuardia’s two runways are “reasonably short” but still safe, said former US Airways pilot John M. Cox, who’s now CEO of Safety Operating Systems.
At airports with longer runways, pilots glide a few feet above the runway and gently touch down.
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