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Investigators look into pairing of Asiana pilots
Thursday - 7/11/2013, 4:20am EDT
SAN FRANCISCO (AP) -- As Flight 214 descended over San Francisco Bay, both Asiana Airlines pilots were trying something new.
In the left seat of the cockpit sat Lee Gang-kuk, a 46-year-old pilot with 35 hours of experience flying a Boeing 777 who was landing the big jet for his first time at San Francisco International Airport. At his right was Lee Jeong-Min, a trainer making his first trip as an instructor pilot.
While the two men had years of aviation experience, this mission involved unfamiliar duties, and it was the first time they had flown together. The flight came to a tragic end when the airliner, which came in too low and too slow, crash-landed on Saturday, killing two passengers and injuring many others as it skittered and spun 100 feet.
Investigators trying to piece together what went wrong are looking at the pairing of the pilots, who were assigned to work together through a tightly regulated system developed after several deadly crashes in the 1980s were blamed in part on inexperience in the cockpit.
They will also be examining their working relationship, said National Transportation Safety Board chairman Deborah Hersman on Wednesday.
"We are certainly interested to see if there are issues where there are challenges to crew communication, if there's an authority break in where people won't challenge one another," she said.
Pilots are trained to communicate their concerns openly, she said, "to make sure that a junior pilot feels comfortable challenging a senior pilot and to make sure the senior pilot welcomes feedback in a cockpit environment from all members of the crew and considers it."
The NTSB has now concluded interviews with all four pilots who were aboard the plane.
Hersman said Wednesday the pilot trainee told investigators he was blinded by a light at about 500 feet, which would have been 34 seconds before impact and the point at which the airliner began to slow and drop precipitously. She said lasers have not been ruled out. It was unclear, however, whether the flash might have played a role in the crash.
Hersman also said that a third pilot in the jump seat of the cockpit told investigators he was warning them their speed was too slow as they approached the runway.
And she said when the plane came to a stop, pilots told passengers to stay seated for 90 seconds while they communicated with the tower as part of a safety procedure. Hersman said this has happened after earlier accidents and was not necessarily a problem. People did not begin fleeing the aircraft until 90 seconds later when a fire was spotted outside the plane.
Hersman stressed that while the trainee pilot was flying the plane, the instructor was ultimately responsible, and thus the way they worked together will be scrutinized.
"That's what the airline needs to do, be responsible so that in the cockpit you're matching the best people, especially when you're introducing someone to a new aircraft," former NTSB Chairman James Hall said.
Massachusetts Institute of Technology aeronautics professor Mary Cummings said it's common for two commercial pilots who have never worked together before to be assigned to the same flight.
But she said the military tries to have crews work together more permanently.
"Research would tell you that crew pairing with the same people over longer periods of time is safer," she said. "When two people fly together all the time, you get into a routine that's more efficient. You have experience communicating."
Jeff Skiles, a US Airways first officer, said that with the right training it should not matter if a pilot new to a plane is paired with a pilot making his first trip as a training captain.
"Everybody had to have their first time," Skiles said. "You can't show up and have 500 hours experience in aircraft."
Skiles was the co-pilot of the "Miracle on the Hudson" jet that lost thrust in both engines after colliding with a flock of geese. The skillful flying of captain Chesley "Sully" Sullenberger and teamwork between Skiles and Sullenberger was credited for a water landing on the Hudson River that saved the lives of all aboard.
The January 2009 accident happened after the pilots had been paired together only four days.
Details emerging from Asiana pilot interviews, cockpit recorders and control-tower communications indicate that Lee Gang-kuk, who was halfway through his certification training for the Boeing 777, and his co-pilot and instructor, Lee Jeong-Min, thought the airliner's speed was being controlled by an autothrottle set for 157 mph.