作者: toylet 時間: 2019-3-16 01:02 標題: [法新社]據傳波音將為737MAX防失速系統升級軟體
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作者: toylet 時間: 2019-3-16 01:03 標題: Window$ Update 來了? 狼來了?
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作者: toylet 時間: 2019-3-16 01:07 標題: [經濟日報]...屢遭投訴 機師︰操作手冊「欠妥得近乎犯罪」
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作者: toylet 時間: 2019-3-16 01:09 標題: [經濟日報]... 自動耷低頭 新機MCAS新系統搞甚麼?
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作者: DGCNYO 時間: 2019-3-16 20:39
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作者: toylet 時間: 2019-3-16 21:22 標題: 人機同步, 天人合一?
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作者: HDMAX 時間: 2019-3-16 22:54
回收重練吧!
作者: toylet 時間: 2019-3-16 23:09 標題: 似乎 testing 做漏咗 cases? 無 實戰 testing?
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作者: toylet 時間: 2019-3-18 11:54 標題: ...737Max機種飛行控制糸統安全分析存在重要缺陷?
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作者: toylet 時間: 2019-3-18 11:54 標題: [商業電台]美國交通運輸部正調查737 MAX客機認證程序
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作者: P14 時間: 2019-3-18 11:58
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作者: toylet 時間: 2019-3-18 11:59 標題: 飛飛下,win 10 update, 叫 暗殺!?
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作者: eo38cl 時間: 2019-3-18 12:31
回覆 9# toylet
聯邦航空管理局(FAA) 737 Max客機部份認證程序交返畀波音自己做番
https://www.seattletimes.com/business/boeing-aerospace/failed-certification-faa-missed-safety-issues-in-the-737-max-system-implicated-in-the-lion-air-crash/
“There wasn't a complete and proper review of the documents,” the former engineer added. “Review was rushed to reach certain certification dates.”
When time was too short for FAA technical staff to complete a review, sometimes managers either signed off on the documents themselves or delegated their review back to Boeing.
“The FAA managers, not the agency technical experts, have final authority on delegation,” the engineer said.
In this atmosphere, the System Safety Analysis on MCAS, just one piece of the mountain of documents needed for certification, was delegated to Boeing.
波音交畀FAA文件寫 MCAS系統最多可移動水平尾翼0.6度,印尼空難後波音先至話原來係最多移動2.5度。
但FAA之前認證客機時係根據0.6度做安全分析:
The original Boeing document provided to the FAA included a description specifying a limit to how much the system could move the horizontal tail — a limit of 0.6 degrees, out of a physical maximum of just less than 5 degrees of nose-down movement.
That limit was later increased after flight tests showed that a more powerful movement of the tail was required to avert a high-speed stall, when the plane is in danger of losing lift and spiraling down...
After the Lion Air Flight 610 crash, Boeing for the first time provided to airlines details about MCAS. Boeing’s bulletin to the airlines stated that the limit of MCAS's command was 2.5 degrees.
That number was new to FAA engineers who had seen 0.6 degrees in the safety assessment.
“The FAA believed the airplane was designed to the 0.6 limit, and that's what the foreign regulatory authorities thought, too,” said an FAA engineer. “It makes a difference in your assessment of the hazard involved.
The higher limit meant that each time MCAS was triggered, it caused a much greater movement of the tail than was specified in that original safety analysis document.
作者: YES_MAN 時間: 2019-3-18 19:11
無共产党元素就好似食公仔面無落味精包咁,
美媒曝習近平訪法將討論購買空客飛機...
作者: toylet 時間: 2019-3-18 19:24 標題: 全 世界 的 政府 都會 做錯決定, 是否故意就好難估!
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作者: rabbit82047 時間: 2019-3-18 22:25
一講無味精包, 味精包就出現

作者: toylet 時間: 2019-3-18 22:36 標題: 味精包?
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作者: toylet 時間: 2019-3-20 18:28 標題: [經濟日報]... 休班機師勇救客機 揭新系統令人費解
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作者: toylet 時間: 2019-3-21 20:51 標題: [on.cc東網]獅航墜機前錄音...機師慌忙查手冊欲挽救不果
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作者: wwwvv0701 時間: 2019-3-21 21:08
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作者: toylet 時間: 2019-3-21 23:53
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作者: madebyp90 時間: 2019-3-22 02:31
美帝一定保佢
怕乜
交$可以了事
作者: yukashing 時間: 2019-3-22 10:24
除非有其他大頭崛起,否則最多罰大大筆錢了事。以後都係新款飛機唔好搭,等佢飛翻個5,6,7年先。

作者: toylet 時間: 2019-3-22 12:33
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作者: DGCNYO 時間: 2019-3-22 22:22
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作者: toylet 時間: 2019-3-23 20:26 標題: [波音737 MAX]新機模擬器短缺 揭新舊機差異或受低估
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作者: toylet 時間: 2019-3-29 19:59
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作者: toylet 時間: 2019-3-29 23:09 標題: [商業電台]埃航空難調查初步結果指飛機防失速系統曾啟動
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作者: isvh5 時間: 2019-3-30 10:24
放心c919一定有中國航空公司埋單,
好似而家架arj21咁,
成都航空已經有8架了.......
唔怕死想試搭arj21,
可以返大陸搭.
作者: toylet 時間: 2019-4-2 18:45 標題: [商業電台]波音需更多時間修正737 MAX操控軟件
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作者: nelsonlee130 時間: 2019-4-2 19:20
咁多篇報導都無提過

Boeing/FAA係獅航空難後係有跟進
B737-MAX-AD-1107
內容可以自己睇
我覺得今次重點, 係埃航有無確實執行上述文件內容
作者: toylet 時間: 2019-4-3 20:08 標題: [經濟日報]...前工程師爆料 揭新系統MCAS點解無安全網
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作者: toylet 時間: 2019-4-3 20:45
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作者: nelsonlee130 時間: 2019-4-3 21:20
都預左無人會認真睇份AD
我貼重點出黎
Required by AD 2018-23-51
Runaway Stabilizer
Disengage autopilot and control airplane pitch attitude with control column
and main electric trim as required. If relaxing the column causes the trim to
move, set stabilizer trim switches to CUTOUT. If runaway continues, hold
the stabilizer trim wheel against rotation and trim the airplane manually.
Note: The 737-8/-9 uses a Flight Control Computer command of pitch
trim to improve longitudinal handling characteristics. In the event of
erroneous Angle of Attack (AOA) input, the pitch trim system can trim
the stabilizer nose down in increments lasting up to 10 seconds.
In the event an uncommanded nose down stabilizer trim is experienced
on the 737-8/-9, in conjunction with one or more of the indications or
effects listed below, do the existing AFM Runaway Stabilizer
procedure above, ensuring that the STAB TRIM CUTOUT switches
are set to CUTOUT and stay in the CUTOUT position for the
remainder of the flight.
An erroneous AOA input can cause some or all of the following
indications and effects:
• Continuous or intermittent stick shaker on the affected side only.
• Minimum speed bar (red and black) on the affected side only.
• Increasing nose down control forces.
• IAS DISAGREE alert.
• ALT DISAGREE alert.
• AOA DISAGREE alert (if the option is installed).
• FEEL DIFF PRESS light.
• Autopilot may disengage.
• Inability to engage autopilot.
Initially, higher control forces may be needed to overcome any
stabilizer nose down trim already applied. Electric stabilizer trim can be
used to neutralize control column pitch forces before moving the STAB
TRIM CUTOUT switches to CUTOUT. Manual stabilizer trim can be
used before and after the STAB TRIM CUTOUT switches are moved
to CUTOUT.
其實"Runaway Stabilizer"就唔係MAX先會出現嘅問題
MCAS固然有缺憾 但我睇就比媒體用黎無限放大 引導觀眾
自己上youtube掘下, 關於"Runaway Stabilizer"嘅示範片段多不勝數
[youtube]3pPRuFHR1co[/youtube]
機師唔識應對先講唔通吧
我信唔信, 重要咩?
NTSB一查埃航機師訓練記錄, 真相就會大白
p.s.其實埃航一早打緊開口牌, 梗係啦, 查到not comply with AD 釘牌架

作者: toylet 時間: 2019-4-3 22:19
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作者: nelsonlee130 時間: 2019-4-3 23:05
講得出not necessary只係顯得出你對成件事有幾偏頗, 英文叫bias
份AD由FAA發出, 航空公司人人有份, 而且列明
"Comply with this AD within the compliance times specified, unless already done."
"Within 3 days after receipt of this AD, revise the Certificate Limitations chapter of the
applicable AFM to include the information in figure 1" (即係#34嘅內容)
即係航空公司收到後3日就要更新Airplane Flight Manual(AFM)
份AD就7 NOV 2018發出嘅, 埃航發生前3個月, 咁簡單嘅英文唔駛再elaborate掛?
啱啊, 一般人無上過堂又點知"訓練是否足夠?"
所以我話"我信唔信, 重要咩?"
FAA, NTSB等政府機構知咪得囉
機師訓練記錄實有留低嘅
除非埃航毀屍滅跡者
你唔會想講, 揸過737 MAX先可以評論今次意外掛
敢問師兄你又揸過737 MAX? 見你MCAS AOA云云講到言之鑿鑿咁
新聞評論班記者肯定有737 MAX type cert. la 仲有出黎評論果班磚家

作者: toylet 時間: 2019-4-4 00:44
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作者: nelsonlee130 時間: 2019-4-4 01:03
真正結果起碼一年後NTSB出報告先知
好似13年Asiana 214 都要14年先有report summary
https://www.ntsb.gov/news/events ... a_BMG-abstract.aspx
但一年後仲有幾多媒體會繼續炒作
仲有幾多人會記得埃航
that's the question
作者: toylet 時間: 2019-4-4 19:23
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作者: ccc123 時間: 2019-4-4 19:34
邊個夠胆撘。。。。。。
作者: toylet 時間: 2019-4-4 21:02 標題: 北美 的 737 Max 8 **無**出事....
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作者: hong1825 時間: 2019-4-5 12:45
搭自己國家的C919
作者: toylet 時間: 2019-4-5 21:11 標題: [星島日報]...波音CEO致歉 認機種出現第二個軟件問題
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