Am I missing something ?
Some FDR traces are available on the
PDF by the japan agency.
The duration of the rudder trim inputs are shown on those traces.
Why do people still elaborate theories about "29 seconds, what a fool to keep that for so long", when the traces show 2 inputs, each one with a duration of ~5-7"
29 seconds is the time it takes to go from trim neutral to full trim.
Nowhere was it said that in ANA's story the knob was held for 29 seconds!!
Of course not, but pilots just love to talk out of body cavities that weren't meant to talk out of