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Forum: Tech Log

14th May 2019, 11:46

Replies: 54

Boeing advice on "aerodynamically relieving airloads" using manual stabilizer trim

Views: 53,640

Posted By DaveReidUK

My understanding is that the trim wheel moves if,...

My understanding is that the trim wheel moves if, and only if, the motor/screwjack/stab are moving. If those are moving, it won't be due to aerodynamic forces.

Previous posts suggest that it's...

Forum: Tech Log

9th Apr 2019, 06:59

Replies: 54

Boeing advice on "aerodynamically relieving airloads" using manual stabilizer trim

Views: 53,640

Posted By DaveReidUK

Looking at the FDR trace, the longest application...

Looking at the FDR trace, the longest application of ANU trim (about 9-10 seconds) appears to have moved the stab about two units. That's almost, but not quite, the rate that MCAS had been moving it...

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