737MAXの件 経過の続き ２

Johanna Wagstaffe @JWagstaffe

Boeing and the battle over blame - Ethiopian Airlines rejects accusations of pilot error bbc.in/2InaAic via @bbcnews

サキノハカ @sakino_haka

Battle over blame - Ethiopian Airlines rejects accusations of pilot error(非難との戦い - エチオピア航空はパイロットエラーの言いがかりを却下する) bbc.co.uk/news/extra/sd9… 2019年6月16日

サキノハカ @sakino_haka

Boeing is crowding its employee parking lot with undelivered 737 Max jets, and the company says that's part of its 'inventory-management plan' businessinsider.com/boeing-737-max… via @businessinsider

Yahoo Finance @YahooFinance

'I'm outraged at Boeing:' Why pilots are suing over the 737 Max yhoo.it/2RuKblc by @alexiskweed pic.twitter.com/2SqD9zJFP4

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日経クロステック 自動車・電機 @techon

ボーイング737MAXの連続墜落事故、補正システムが誤作動か nkbp.jp/2RuzjE7

Peter Lemme @Satcom_Guru

My first look at 737 Pitch Trim Incidents was incomplete. With the help of a reader, I have added 35 more events. Runaways and Jams do happen! For the most part, there was no issue with manual wheel trim. WAG on failure rates Revised post: satcom.guru/2019/05/737-pi… pic.twitter.com/I35oAWTaGh

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サキノハカ @sakino_haka

Boeing and Airbus made huge mistakes, but their dominance is under no threat(ボーイングとエアバスは大きなミスを犯したが、彼らの優位性は脅威にさらされてはいない) - CNN cnn.it/2J4puJh

サキノハカ @sakino_haka

雑な要約：寡占市場すぎてボーイングもエアバスも失敗しようが何しようが相変わらず強い(でもCOMACは潜在的に競争相手になりうるかも)

Andrew Tangel @AndrewTangel

The FAA reassigned managers in the office overseeing Southwest Airlines amid allegations of lax safety enforcement raised by agency whistleblowers wsj.com/articles/faa-r…

サキノハカ @sakino_haka

gigazine.net/news/20190627-… 「総合的な在庫コストは2019年9月末までに120億ドル(約1兆3000億円)にのぼると見積もられています。」 うん

Reuters @Reuters

U.S. regulator cites new flaw on grounded Boeing 737 MAX reuters.com/article/us-eth… pic.twitter.com/Psp50Llq7F

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The FAA ✈️ @FAANews

#FAA Statement on the @Boeing #737Max. pic.twitter.com/pGIkjgnfpn

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CNN Politics @CNNPolitics

New flaw discovered on the Boeing 737 Max, sources say cnn.it/2NfPYNj pic.twitter.com/sT7wdhU8xM

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サキノハカ @sakino_haka

CNNのニュースを見る限り、「マイクロプロセッサがちょっと故障しただけで(操縦士が数秒以内にどうにかできない感じの)機首下げが起こる」ということね…冗長性がたりない…

cnn_co_jp @cnn_co_jp

ボーイング７３７ＭＡＸに新たな欠陥、運航再開さらに遠のく cnn.co.jp/business/35139…

AP Business News @APBusiness

A new software glitch will likely further delay the return of Boeing's troubled 737 Max. AP's @airlinewriter reports: apne.ws/YzW9SYh

Seattle Times Biz @seatimesbiz

Tests on Boeing’s grounded 737 MAX have revealed a new safety risk unrelated to two fatal crashes that led to the grounding of the aircraft. st.news/2xdi40F #Aerospace

Pilot Magazine @pilot_mag

Retired BA Boeing 747 captain and experienced B737 pilot Bob Grimstead analyses the probable cause of the Lion Air and Ethiopian Airlines accidents, and the implications for aircraft certification bit.ly/2ZONu9L

サキノハカ @sakino_haka

The Boeing 737 MAX scandal: A retired BA pilot analyses the probable causes and future implications pilotweb.aero/features/737-m… ブリティッシュ・エアウェイズ元パイロットによる分析(※これは今日のグリッチとは関係ないです)

Jon Ostrower @jonostrower

Muilenburg says people have lost their jobs and leaders reassigned as a result of the 737 Max crashes, but won’t say where in the company, who or how many changes have been made. twitter.com/BoeingCEO/stat…

Jon Ostrower @jonostrower

Boeing just put out an 8K SEC filing (a material event) stating that the MCAS software needs to be altered to address a "specific condition of flight, which the planned software changes do not presently address.” Looks likely to add a fresh delay to the 737 Max's return. pic.twitter.com/59nVwKU9nT

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Peter Lemme @Satcom_Guru

Speed trim, MCAS is part, uses single-channel command thread; no protection from CPU malfunction. Failures would be classic runaway, 3 sec. rule. 2nd proc. (on-side) doesn't stop malfunction command. Off-side FCC control is not involved, as far as I know. cnn.com/2019/06/26/pol…

Peter Lemme @Satcom_Guru

Speed-trim has been in-service for 35 years without any reported incident involving CPU runaway. Runaways seen are hardware failures in the switching circuit or in the actuator. MCAS does not increase the failure rate from before, but it does increase trim rate in runaway.

Peter Lemme @Satcom_Guru

any assertion that MCAS must have a dual processor (fail-passive) mandate would implicate Speed Trim and all 737 classic and 737 NG. There is no service history to suggest an imminent danger for Speed Trim processor failure.

Peter Lemme @Satcom_Guru

I believe Boeing should have designed Speed Trim as a two channel system, using FCC Left and Right channels, back in 1984. There are aspects in autoland the could be reused, mostly a software exercise. In a perfect world! After all these years, it has been proven reliable enough.