San Francisco's South Korean airliner crashed while landing TransAsia Airways pilots get so little opportunity to fly these days without the aid of advanced automation, are eroding their stick and rudder skills attention.
National Transportation Safety Board is investigating the accident concluded that the possible reason is a very long way to go. Although the focus of their investigation is still to be transferred, the information released by the board, so far seems to point to pilot error.
What is known, its objectives runway Saturday Asiana Airlines Flight 214 crashed in broad daylight, at San Francisco International Airport nearly ideal weather conditions. Boeing 777 engine was still studying, but they seem to have normal reception power. Flight pilots did not report any mechanical problems or other problems.
But the aircraft before the crash of the last half a minute too slow, slow enough to trigger an automatic warning of impending aerodynamic stall.
Wide-body jet should have been traveling at 158 ??mph across the runway. In contrast, the previous low of 118 miles per hour down the plane hit a rock seawall short runways. Aircraft careened, and subsequently fried dumpling. 307 people on board two were killed and dozens injured.
Pilot, Li Gang GUK, there are a lot of flying experience, but is still a new plane, the control frequency is only 43 hours. He was supposed to fly another experienced pilot's supervision. There are two plates Seoul pilots flying to San Francisco, is a typical long-haul flight, during this period, two pilots rest, and two fly, and then swapped out.
Lee did not fly through the airport instrument landing system, which provides the pilot with glidepath to follow, this aircraft is not too high or too low, too much to the left or right. He is also the new airport, and never before landing.
He manually flying the aircraft autopilot shut down, other pilots said that in the final stage of landing, it is not unusual, although some airlines prefer their pilots use the automatic landing system. It is unclear is whether to automatically adjust the power to control the speed of the engine, throttle, closed, or in idle mode perhaps unintentionally leave. This may account for slow, but it does not explain why the pilot did not realize the danger of their behavior to avoid crashes, pilots and aviation safety experts say.
Investigation has begun interviewing four pilot flying and want to package these interview Tuesday. Most airlines require that all four pilot programs in the cockpit during landing, this is the most critical phases of flight, the pilot said. NTSB has not disclosed whether all present.
"It sounds like they slow the aircraft, according to them out, and said:" John Cox, a former Air Force Pilots Association crash investigators. "When the aircraft is slow like this, even if they did not stop there, they can develop one, it requires a lot of power to arrest the sink rate."
A major airline to fly internationally, Rory Kay, training captain said, "We all know the same thing - why did not react?"
Overall, automation also a great boon for aviation safety, providing a consistent accuracy, humans can not be repeated. But pilots and security officials have expressed concern in recent years, the pilot of the "automation addiction" has eroded their flying skills, so that they sometimes do not know how to recover from stalls and other problems. In recent years, many accidents occur in stagnant aircraft in flight or unusual position, the pilot can not be recovered drilling.
Cass Howell, former military pilot and Embry-Riddle Aeronautical human factors expert, said: "If you're in the past ten landing autopilot landing, where you are faced with only visual cues to handle, rust factor will be greater , "university in Daytona Beach, Florida" Automation excessive may destroy your flying skills. "
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