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NTSB on Asiana pilot saying he saw light before crash

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sf jet crashLaura Nelson, Los Angeles Times

Officials are investigating whether the pilot of the Asiana Airlines jet that crashed into the runway at San Francisco International Airport last Saturday had been blinded seconds before by a flash of light.

The pilot flying the plane, a veteran captain still in training on the Boeing 777, reportedly told Korean investigators that a bright flash temporarily blinded him at an altitude of about 500 feet.

National Transportation Safety Board Director Deborah A.P. Hersman said pilot Lee Kang-kook shared “some of that information” with the U.S. investigators interviewing the pilots.

“We really don’t know what it could have been,” Hersman said. “We need to look into it. We need to understand what he’s talking about.”

The NTSB chief spent several minutes during a news conference on Thursday clarifying reports that have shown up in South Korean media, including one where the pilot flying the plane reported being temporarily blinded by a flash of light.

Hersman said the pilot at the controls of Flight 214 told investigators that at about 500 feet before crash landing, he briefly saw a bright light “that could have been a reflection of the sun,” but he wasn’t sure.

The pilot told investigators he did not believe the light affected his ability to fly the plane, as it didn’t affect his vision and he could see inside the cockpit, she said.

At the same altitude, the pilots realized the jet was coming in too low, and tried to correct their path. The speed of the airplane also slowed significantly at that altitude, from about 134 knots (154 mph) at 500 feet, to 118 knots (136 mph) at 200 feet, to 112 knots (129 mph) at 125 feet.

During the briefing, Hersman outlined other aspects of the ongoing investigation, including a deeper analysis of the plane’s automated flight systems to determine how they interacted, whether the pilots used them properly or if they malfunctioned during the landing.

Noting that the Boeing 777 has some of the most sophisticated automation in the sky, Hersman said the systems, such as the auto-throttles, have many settings and can be coupled with one another.

Investigators found that in the 2-1/2 minutes before the crash, multiple auto-throttle modes and multiple auto-pilot modes had been set.

“What was the final mode the airplane was in?” Hersman asked. “We still need to validate the data. We need to make sure how the devices were set and what the pilots understood the modes to be.”

The evacuation of more than 300 people aboard the jetliner did not begin until 90 seconds after the aircraft came to rest and only when fire was spotted by a flight attendant, federal investigators said.

Getting everyone out of the wide-body 777 late Saturday morning also was complicated by two escape slides that inflated in the cabin, pinning down two crew members, as the plane careened down Runway 28L.

The accident killed two teenage girls from China who were coming to Los Angeles for a summer camp. Scores more were injured.

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