WASHINGTON (AP) -- Thunderstorms that boil up in summer can leave airline passengers sitting on the tarmac, just as snowstorms in winter can.
The Federal Aviation Administration is out to minimize those delays by expanding a special air traffic control system it tested last summer.
The program is called "airspace flow," and the idea is to give airlines the choice between having pilots fly longer routes around storms or taking the delay and waiting on the ground.
The F-A-A says last year's experiment reduced bad-weather delays nine percent in seven cities in the Northeast. This summer, it will be rolled out to 18 cities.