www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

Make me your Homepage
left corner left corner
China Daily Website

New details emerge in Asiana crash

Updated: 2013-12-12 09:18
( Agencies)

WASHINGTON - In the crucial minutes before an Asiana Airlines flight crashed in San Francisco last summer, the pilots voiced concern about the plane's low speed but did nothing to correct it until just before it hit the ground.

A hearing on Wednesday into the July 6 crash that killed three people and injured more than 180, highlighted the pilots' mistaken reliance on the autopilot to maintain their airspeed but also Korean cultural factors that may have played a role and the design of the flight controls.

New details emerge in Asiana crash

An Asiana Airlines Boeing 777 plane is engulfed in smoke on the tarmac after a crash landing at San Francisco International Airport in California July 6, 2013, in this handout file photo provided by passenger Eugene Anthony Rah, released to Reuters on July 8, 2013. Photo/Agencies]


The pilot flying the plane was "stressed" about hand-flying the plane, according to interviews with National Transportation Safety Board investigators, and hesitant about aborting the landing because he felt the more senior pilot observing him should make that call.

Asiana Airlines Inc Flight 214 came in too slowly and too low, causing the plane's tail to hit a seawall short of the runway. The plane spun 330 degrees as it broke apart and caught fire, strewing wreckage along the runway.

It was the first fatal commercial airplane accident in the United States since February of 2009 and the first fatal accident for Boeing Co's 777 airliner since it entered service in 1995.

There was no indication of mechanical problems with the plane.

The crash has sharpened a debate on whether over-reliance on autopilot systems in modern aircraft has led to degraded human flying skills and increased the risk of accidents.

There is "an issue in aviation" with cockpit automation, NTSB Chairman Deborah Hersman told reporters covering the board's hearing but she added that the airline industry has a robust safety record.

Hersman said the agency has no immediate plans to make recommendations from the hearing, but if it finds a safety issue, it can make recommendations at any time.

The NTSB typically takes 12 to 18 months to complete a major investigation.

Training, rescue response

The hearing also questioned the pilots' training and the rescue response.  One of the victims died from being struck by a rescue truck after the crash.

Training has been central to the investigation because although the pilots had many hours of flying experience, Lee Kang-kook, the pilot flying the plane, was making his first landing of a Boeing 777 jet in San Francisco. His supervisor, Lee Jeong-min, was making his first flight as a trainer.

The Asiana pilots said in interviews with the NTSB that they left their "flight director" system, which includes the autopilot, partly on.

But in that mode, the system would not "wake-up" from hold mode, testified Captain John Cashman, a retired Boeing 777 test pilot, at the hearing on Wednesday. The lack of wake-up meant the autothrottle was not going to prevent the plane's speed from slipping below the minimum needed to keep it aloft.

The design is consistent with Boeing's philosophy of leaving the pilot in charge of the controls. "We try not to put in design elements that override the pilot," Cashman said at the hearing. "We try to let him be the decider."

Cashman said the design principles had been consistent for 31 years, across Boeing's 747, 757, 767, 777 and 787 models.

Previous Page 1 2 Next Page

8.03K
 
...
...
主站蜘蛛池模板: 日本一区二区三区国产 | 久久久久综合一本久道 | 国产欧美一区二区三区观看 | 久久老司机波多野结衣 | 精品国产一区在线观看 | 国产精品久久久久久久免费 | 99视频在线播放 | 欧美在线综合 | 老司机亚洲精品 | 久久视频精品53在线观看 | 国产一级毛片视频 | 在线欧美一级毛片免费观看 | 欧美成年黄网站色高清视频 | 免费久| 国产第2页 | 手机在线看片福利 | 久久青草网站 | 日韩欧美二区 | a毛片免费在线观看 | 久久久久国产精品 | 美女扒开腿让男生桶爽网站 | 久久精品免费播放 | 国产精品6 | 国产精品一区久久 | 亚洲一区二区成人 | 美国一级毛片片aa免 | 日本三级香港三级三级人 | xxx国产hd | 欧美手机看片 | 狠狠色综合久久婷婷 | 在线一区免费播放 | 欧美另类孕交免费观看 | 韩国精品欧美一区二区三区 | 男女午夜爱爱久久无遮挡 | 精品国产免费观看一区 | aaa毛片免费观看 | 成人欧美一区二区三区视频 | 一级真人毛片 | 99国产高清久久久久久网站 | 免费看日韩欧美一级毛片 | 国产一区视频在线播放 |