Ethiopian airliner down in Africa
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What Boeing REALLY needs to do is have multiple inputs to the MCAS, so it is not reliant on a single AoA sensor. At the very least MCAS needs to drop out if it senses a mismatch between the AoA sensors, and just flag an error-fault. The last thing MCAS should be doing is activating its protocols, when it must know that the AoA sensors are in disagreement.
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How can an aircraft's certification be reliant on one single AoA vane always functioning correctly? I know it's been brought up about Airbus having 3 sources, but if you designed it correctly, you could have 100 mini AoA sensors for this function, and only let the software control flight surfaces when at least say 60 are in agreement! The software isn't the problem, the problem is the fact that the software relies on a single data source that isn't verified. Others have commented about the AoA being cross-checked against ASI etc. before making control inputs, that would be a good start.
AND... if you're going to throw in different functions and automated controls onto an aircraft, please have the decency to let the professional crew know what they are and how they work first, just in case they do something they shouldn't!
P.S. How many backdoor, certification reliant, automated controls are there that can function when AP is off? Or is MCAS the the only one so far?
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TVS4160 is not heading towards Tel Aviv. It is now circling near Malta.
Given that both planes are not descending, maybe QS is negotiating for a waiver but wants them to be near IST and MLA in case that it does not come forward.
Last edited by Pilot DAR; 13th Mar 2019 at 02:00. Reason: Removed Tel Aviv remark for no value.
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Here is the question. I've posed this to three friends that are on Max fleets... "If this happened to you a week ago, would you be dead?" (2 captains, 1 F.O.) the answers ranged from "probably" to "yes"..... The most important question followed "have you reported this anonymously to at least your company?" Yes they have and to their national aviation authority.... We are in a period of public hysteria, but, us professionals are doing it right. If the media catches this, so be it, we ain't skygods no more.... Ask your friends the same question.
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The 737 incurs a pitch up moment with additional thrust because of engine placement and moment. Not because of “lift”. I’m glad you’re working on your multi engine ratings right now and went over vmc factors including accelerated induced flow.
Boeing’s passive voice responses to all of this is reminiscent of how they dealt with the accidents involving the faulty rudders on the 737s years ago.
One supposes if blame is pointed their way that they will pay compensation without admitted guilt. Big business. Our deaths get factored into the number crunches.
One supposes if blame is pointed their way that they will pay compensation without admitted guilt. Big business. Our deaths get factored into the number crunches.
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QS 4160 seems to have made up its mind to go somewhere..
Control column actuated stabilizer trim cutout switches stop operation of the main electric and autopilot trim when the control column movement opposes trim direction. When the STAB TRIM override switch is positioned to OVERRIDE, electric trim can be used regardless of control column position.
I just grabbed that from the NG tech manual. I’m assuming that the MAX has them as well?
I just grabbed that from the NG tech manual. I’m assuming that the MAX has them as well?
I don’t fly the 737, but the regional airliner I have flown for the last 20 years gives total control to the pilot once this button is pushed. Not even the yaw damper is retained. I mean Jesus H Christ! What the hell has happened to simple common sense in design?
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The minute they call a mayday they'll be given assistance and allowed in!
So, when it seems to be functioning fine they're told "Go away! You're not safe"
When they call a Mayday, "come on ahead into our country, we'll get some fire crew and ambulances"
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The irony of some flights not being allowed into the airspace:
The minute they call a mayday they'll be given assistance and allowed in!
So, when it seems to be functioning fine they're told "Go away! You're not safe"
When they call a Mayday, "come on ahead into our country, we'll get some fire crew and ambulances"
The minute they call a mayday they'll be given assistance and allowed in!
So, when it seems to be functioning fine they're told "Go away! You're not safe"
When they call a Mayday, "come on ahead into our country, we'll get some fire crew and ambulances"
excuse my ignorance but surely wouldn't it have been more sensible for the authorities to give a cut-off time of say, midnight tonight, instead of blanket bans everywhere? two aircraft have now spent hours more in the air than they needed to, no doubt inducing panic amongst the pax, being held then told to go elsewhere. QS4160 now landing Tunis and it looks like QS1201 enroute to Ankara, having held over the Black Sea. Knee jerk reactions when they have no actual factual data?
Why not say all aircraft once landed at destination have to be grounded? There was a max into MAN earlier today, AFTER the announcement.
Why not say all aircraft once landed at destination have to be grounded? There was a max into MAN earlier today, AFTER the announcement.
