男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影
US EUROPE AFRICA ASIA 中文
World / Asia-Pacific

Airlines move to better track planes a year after Flight 370

(Agencies) Updated: 2015-03-03 16:17

NEW YORK - At 656,000 pounds fully loaded and the length of six school buses, the Boeing 777-200ER is hard to miss.

Yet nearly one year ago, Malaysia Airlines Flight 370 vanished, taking the lives of 239 passengers and crew in one of aviation's greatest mysteries.

Live satellite tracking might have led searchers to the plane but it wasn't turned on for that trip. The flight was supposed to remain mostly over land, well within the coverage area of ground-based radar stations.

Airlines and regulators spent the past year debating how much flight tracking is necessary, balancing the economic costs against reassuring travelers another plane won't disappear. Now a plan is moving forward that would require airlines, by the end of 2016, to know their jets' positions every 15 minutes.

It's not the constant measures first proposed by safety advocates after Flight 370 disappeared and it's questionable if they would prevent another such loss. But it could make for quicker recovery of a missing aircraft and comfort the public. In an age when a missing iPhone or a FedEx package can be tracked, it's unfathomable that something the size of a Boeing 777 could never be found.

"The public's perception of what's acceptable has changed radically," said Todd Curtis, a former Boeing safety engineer and director of Airsafe.com Foundation. "The industry's perception of what's acceptable is not changing as quickly."

Among airlines and regulators there is a consensus that tracking all 90,000 daily flights around the world would be too expensive, particularly for developing countries, and have limited benefits.

The industry thinks Flight 370 was an anomaly not likely to be repeated. If airlines, especially those in developing nations, are to spend money upgrading cockpits, they would rather add collision-avoidance systems that prevent fatalities.

"If you're too aggressive and stringent in setting up a requirement, countries will just elect not to participate," said John Hansman, an aeronautics professor at Massachusetts Institute of Technology.

The International Civil Aviation Organization, part of the United Nations, outlined the new tracking requirements last month. A formal vote on the rules is expected by November. Each country's air traffic regulator would then have to accept and implement them. Australia, Indonesia and Malaysia just announced plans to be among the first nations to test such tracking.

In the near team, airlines would be responsible getting updates from their planes every 15 minutes. That could be via ground radar, automatically by satellite while flying over oceans or even having the pilots verbally report their location over radios. The aviation group doesn't specify the form of communication but squarely puts the onus on the airlines. It doesn't require the airlines to spend $50,000 to $100,000 a jet to retrofit cockpits with new avionic equipment. Most of the technology is already in place.

Previous Page 1 2 Next Page

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 皋兰县| 阳山县| 邵阳县| 韩城市| 崇信县| 剑河县| 彰武县| 甘孜县| 舟曲县| 曲周县| 沭阳县| 辽阳市| 晋中市| 营口市| 岫岩| 文昌市| 建瓯市| 莲花县| 延川县| 嘉善县| 乐业县| 沙河市| 句容市| 遂溪县| 民勤县| 土默特左旗| 乐山市| 堆龙德庆县| 荣成市| 卢湾区| 神池县| 山西省| 古交市| 华坪县| 甘孜县| 云霄县| 梁平县| 鹤岗市| 合川市| 霍州市| 彭州市| 襄垣县| 大港区| 方正县| 南部县| 沾化县| 嘉禾县| 武胜县| 会泽县| 潮州市| 安丘市| 台中市| 稻城县| 兴隆县| 峨眉山市| 长海县| 宜昌市| 小金县| 涞水县| 新民市| 博兴县| 龙南县| 寿光市| 遵化市| 化隆| 囊谦县| 新营市| 宾川县| 金寨县| 印江| 永福县| 沽源县| 丹凤县| 安丘市| 乌拉特前旗| 武陟县| 丰都县| 屏东市| 繁峙县| 靖州| 那坡县| 象山县|