An American Airlines flight to Boston has made an emergency landing in New York after the captain became ill and later died.
Flight 550, which left Phoenix, Arizona, at 11.55pm local time and was diverted mid-flight, landing shortly after 7am New York time (noon GMT).
Airline spokeswomen Andrea Huguely said said after the flight’s captain was stricken, the first officer landed the plane, with 147 passengers and five crew members on board, safely.
“We are incredibly saddened by this event, and we are focused on caring for our pilot’s family and colleagues,” the airline said.
Details of the medical emergency and the identity of the pilot were not immediately released, nor was it clear when the pilot died.
Ms Huguely said a replacement crew was sent to Syracuse and the plane later completed its trip to Boston.
Before the flight landed at Syracuse, the first officer called the airport tower and said in a calm voice: “American 550. Medical emergency. Captain is incapacitated.” He requested a runway to land.
In a recording of his exchange with the tower, the officer expresses concern whether medics can get on the plane quickly. He is assured that they can and is told to go into a gate where the medics would meet the plane.
Passenger Louise Anderson, who was heading from Reno, Nevada, to Boston via Phoenix, said she had dozed off on the flight.
“What I woke up to was the flight attendant telling us we were making an emergency landing because the pilot was ill,” she said.
She said rumours were circulating of the pilot’s death in the Syracuse airport, but they were only confirmed by an announcement on their flight to Boston.
Ms Anderson said the mood on board then was sombre, but she praised the crew’s handling of a tragic situation.
Airline pilots must pass a physical exam every 12 months, every six months for captains 40 or older.
Steve Wallace, who led the Federal Aviation Administration’s accident-investigations office from 2000 to 2008, said it was rare for a pilot to become incapacitated.
“What is important is the consistent result, the plane lands safely,” he said. “The co-pilot is fully qualified to fly the airplane. It’s rare but they train for it.”
According to the FAA, seven pilots for US airlines and one charter pilot have died during flights since 1994.
Captains and co-pilots usually take turns flying the plane and doing take-offs and landings, said James Record, a former airline pilot who now teaches aviation at Dowling College in Oakdale, New York.
“The advantage to that is the co-pilot gets an equal amount of experience, and the captain gets to see how the other guy flies,” he said.
Mr Record said the passengers on the American Airlines flight were never in danger and the co-pilot remained calm while describing the emergency and requesting permission from air traffic controllers to land the plane.
“He was doing what he’s trained to do, fly the plane,” he said. “He was probably more concerned with the health of his buddy, his crew member”, than his ability to fly.
Modern airliners are capable of largely flying themselves. There is a debate in aviation circles about whether over-reliance on automation is eroding the manual flying skills of pilots.
Even if planes can fly by themselves, however, incidents like Monday’s help ensure that regulators will not allow unmanned cockpits, or even an unaccompanied pilot, any time soon.