PPRuNe Forums - View Single Post - AA A321 takes off after smashing ground sign
Old 1st Jul 2022, 15:06
  #164 (permalink)  
waito
 
Join Date: Aug 2020
Location: Far East
Posts: 233
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Especially looking at those new plots of mine,
  • from 20:40:10 the left rudder peak values show a decreasing line over speed, as we expect.
  • This is a trend up to 20:40:30, with exception reacting for 2 heading bumps to the right.
  • Only at and after 20:40:30 this known "violent left push" leading to the mess is outstanding.

Now if a zig-zagging between -5 and -13° rudder in initial roll, then moving btwn -3 and -10° in the later roll is typical on that xwind values, I have no idea.
How much inch of travel is 10° rudder pedals?

engines seem stable
speed has unsteadiness at 4-5 points, looks like going along with those heading variations - gust or wake turbs ... so it was not totally steady air, but also not drastic.
no brake line values, no spoiler readouts to compare a right assymetry

Don't think we find other hard facts from it. But how do I know...
waito is online now