[新聞] 報告稱馬航370航班一黑匣子定位電池早已失效

[prussian (prussian)]

似乎只有美聯社在第一時間從報告的一堆舊聞中辨識出新資訊。

官方報告在
http://www.mh370.gov.my/


(美聯社/紐時)
報告稱馬航370航班一黑匣子定位電池早已失效
http://cn.nytimes.com/asia-pacific/20150308/c08plane/zh-hant/
美聯社 2015年03月08日

馬來西亞吉隆坡——關於馬來西亞航空公司370航班失蹤謎團的第一份
全面報告於周日公布，報告披露，在飛機於2014年3月8日消失時，機
上一個水下定位信標的電池已經失效一年多了。

但除了電池的異常問題外，這份詳盡的報告用大量篇幅描述航班的正
常情況，對這個航空界最大的謎團語焉不詳。

(以下略)

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※ 文章網址: https://www.ptt.cc/bbs/Aviation/M.1425828617.A.1F2.html
推 QuentinHu: 看不董
推 scaredreal: 意思就是水下追蹤器平常壞了一年多都沒修
→ scaredreal: 然後好死不死不見根本沒追蹤器找不到
1.11.3.1 SSFDR ULB Battery Expiry

According to maintenance records, the SSFDR ULB battery expired in
December 2012.  There is no evidence to suggest that the SSFDR ULB
battery had been replaced before the expiry date. The SSCVR ULB
battery however was replaced, as scheduled, with the next expiry in
June 2014. There is some extra margin in the design to account for
battery life variability and ensure that the unit will meet the
minimum requirement. However, once beyond the expiry date, the ULB
effectiveness decreases so it may operate, for a reduced time period
until it finally discharges. While there is a definite possibility
that a ULB, will operate past the expiry date on the device, it is not
guaranteed that it will work or that it would meet the 30-day minimum
requirement. There is also limited assurance that the nature of the
signal (characteristics such as frequency and power) will remain
within specification when battery voltage drops below the nominal
30-day level.


ps. SSFDR ULB: Solid State Flight Data Recorder Underwater Locator Beacons
※ 編輯: prussian (122.116.22.52), 03/08/2015 23:48:35
→ Piin: 電池過期不代表失效喔
→ prussian: 標題殺人法 XD 其實新聞內文也有提到啦
→ prussian: 而且 CVR beacon 是正常的
推 Ecclestone: 還沒統一口徑 利益還沒瞧好?
推 Answerme: 超級沒喬好吧，對外都口徑一致"一無所獲"/誰知道你在海
→ Answerme: 上發現什麼
推 yoshilin: 如果是解體，應該早有殘骸出現
→ ndr: 也就是前幾天airasia摔機找到是因為很快就喬好了?
推 vf19c2w: ULD的電池不能充電哦…2014.06就過期了。慘