The pilots of the Jetstream 31, which is owned by Executive Airlines of Farmingdale, N.Y., had reported engine trouble as the plane made its first approach through cloudy skies and mist, prompting airport officials to dispatch fire and ambulance crews.
Dao refused, prompting airport police to pull him screaming from his seat.
The reports of gunfire in Terminals 6, 7 and 8 prompted airport police to shut down the central terminal area to incoming traffic.
And the SARS scare in 2003 prompted airports and airlines to adopt emergency measures, among them screening passengers for high fevers as they boarded.
Company investigators are still trying to find out what caused the flames on the Ethiopian Airlines Boeing 787, prompting the airport to close both runways on Friday.
A parliamentary vote on the decision is still a year away, prompting the airport to seize the momentum with its contract pledge amid warnings from campaigners that the decision was only the start of a prolonged battle.
Now the Boyd Group, the Colorado-based aviation consulting company, has published a new forecast that predicts the number of passengers boarding planes in the United States will total just over 740 million in 2009, far from the 2000 F.A.A. estimate, which had helped prompt many airports to undertake expensive expansion projects.
Wires had been cut in the cockpit and on the brakes of at least one 747, prompting the airport to closely scrutinize its ground staff.
In South Korea, the government issued a typhoon warning for the southern portion of the country along the coast, prompting the airport at Pohang to close, and forcing 162 flights to be canceled.
Airmall led the way in prompting American airports to spend many billions of dollars remaking drab, military-style terminals into bustling, well-designed places for passengers to shop and eat reasonably well while waiting for a plane.
