737 MAX - Safe or Unsafe?
04-04-2019 | 08:11 AM
#161
Gets Weekends Off
Joined: Oct 2006
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04-04-2019 | 09:30 AM
#163
Gets Weekends Off
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04-04-2019 | 10:38 AM
#164
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Joined: Aug 2015
Posts: 997
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One day I will be cool enough to chat with pilots that "went to Boeing".
04-04-2019 | 11:17 AM
#165
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As for the pilots that came to Boeing if your airline flies the MAX why wouldn’t you want to hear what they have to say? I did.
04-04-2019 | 11:25 AM
#166
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From: B717 FO
You're saying they TRIMMED nose down? Where'd you hear that? If so... what a terrible, terrible mistake.
I just read this blog post a bit ago (link below). Perhaps there's scenario where they'd temporarily 'Elevator Nose Down' to help alleviate the forces on the jackscrew while they try to trim up....?
https://www.satcom.guru/2019/04/stab...and-range.html
I just read this blog post a bit ago (link below). Perhaps there's scenario where they'd temporarily 'Elevator Nose Down' to help alleviate the forces on the jackscrew while they try to trim up....?
https://www.satcom.guru/2019/04/stab...and-range.html
https://assets.documentcloud.org/doc...X-Ethiopia.pdf
Direct your attention to page 11, at the "From 05:40:42 to 05:43:11" mark. I can think of no other explanation for what is described here other than manual trim applied in the nose down direction.
04-04-2019 | 11:59 AM
#167
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https://assets.documentcloud.org/doc...X-Ethiopia.pdf
Direct your attention to page 11, at the "From 05:40:42 to 05:43:11" mark. I can think of no other explanation for what is described here other than manual trim applied in the nose down direction.
Direct your attention to page 11, at the "From 05:40:42 to 05:43:11" mark. I can think of no other explanation for what is described here other than manual trim applied in the nose down direction.
04-04-2019 | 12:21 PM
#169
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From: B717 FO
I agree, but I wonder if by accidentally trimming nose-down it lead them to believe manual trim was inop, and thus re-engaging the electric trim and then MCAS finishing the job. Or, were the aerodynamic forces too great to even allow manual trimming in the nose up condition, and possibly even moving the stab slightly nose down with the stab trim cutout activated. If this was the case, I wonder if the aircraft would ever be able to be recovered....
04-04-2019 | 12:27 PM
#170
:-)
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I agree, but I wonder if by accidentally trimming nose-down it lead them to believe manual trim was inop, and thus re-engaging the electric trim and then MCAS finishing the job. Or, were the aerodynamic forces too great to even allow manual trimming in the nose up condition, and possibly even moving the stab slightly nose down with the stab trim cutout activated. If this was the case, I wonder if the aircraft would ever be able to be recovered....
Another thing, the .2 degrees is within the error margin of the recording system, the FO might not have moved the trim at all, and this is simply instrumentation.
Last edited by Mesabah; 04-04-2019 at 12:37 PM.
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