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美媒:MH17航班黑匣子型号老旧 提供信息或有限

2014-07-28 11:01:28   中国新闻网

2014年7月20日消息,数字地球当天提供的资料卫星图显示,马航MH17航班在乌克兰坠毁地点景象。  

中新网7月28日电 据美国《华尔街日报》28日报道,马航MH17航班坠毁现场因缺乏安全保障,严重影响了对MH17的现场调查。而航班的黑匣子因型号较老,或仅能提供有限信息。

报道指出,航空安全专家表示,MH17航班的黑匣子型号较老,对于飞机在疑似遭导弹袭后所发生的一系列事件,黑匣子可能仅能提供有限的信息。

报道指出,飞行数据记录仪和驾驶舱语音记录仪都是上世纪90年代中期生产的,多年后监管机构才强制要求新客机上的这类设备必须包括更大的存储器、更快的记录速度和备用电池,以防机载电子系统突然失灵。美国航空管理局没有强制要求对较老的设备加装备用电源。

专家表示,结果就造成调查人员最终可能只能获得飞机被地对空导弹击中后几秒内情况的粗略数据。他们说,驾驶舱语音记录仪可能除了撞击声外没有记录下什么声音。

据专家表示,记录仪的陈旧加上飞机遭受破坏的程度还意味着,调查人员可能无法对这架客机机身疑似断裂时一连串的设备失灵得出明确的结论。

马来西亚航空公司及记录仪的制造商霍尼韦尔(Honeywell International Inc.)称,设备未装配任何备用电源。业内人士称,如果导弹的初始冲击切断了飞机前端的关键电路及电脑线路,则驾驶舱语音记录仪会在0.25秒内停止工作。

前五角大楼及美国全国运输安全委员会调查员迪尔称,飞机被击中后可能立即失去了大部分电能。他还说,他不认为黑匣子这一次能够像在大多数事故中那样有力地解释驾驶员反应或飞机解体方面的问题。

在刚刚过去的周末,负责分析记录仪数据的英国调查人员表示不对具体工作内容置评,与此同时公众对黑匣子将揭示哪些信息的关注不断升温。

负责整个调查工作的荷兰安全委员会(Dutch Safety Board)此前表示,其成功地从两个记录仪中下载了信息。但该机构未具体说明被恢复的数据中有多少是在导弹袭击前记录下来的。波音未立即回覆置评请求。

在过去的这个周末,荷兰调查人员表示他们未准备好讨论调查细节。MH17航班国际调查团队的全体人员此前都已承诺不会在时机未成熟时透露有关细节。但一些国家监管部门及业内管理人士预计,可能在本月末对外公布部分初步调查结果。

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