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Old 23rd May 2024 | 22:11
  #19 (permalink)  
CVividasku
 
Joined: Apr 2022
Posts: 267
Likes: 21
From: France
Originally Posted by BraceBrace
If we reduce speed we know how to trim at the same time. My 777 time has been a while, but I think the value is 2 sec trim per 10kts speed change? How easy do you need?

To explain the "incorrect statement": on any non-fly-by-wire Boeing, Boeing will always recommend to fly with A/T OFF, when the A/P is off because of the pitch-power coupling (leaving the A/T ON will create unexpected pitch changes with power changes). However, on fly-by-wire Boeing, Boeing will recommend to fly A/T ON with A/P OFF as well, as the fly-by-wire will correct for pitch-power coupling (and pitch changes due to config changes).
So, you mean the trim will trim a continuous 5kt per second ?
So, if you had a speed trend of 50kt up, you would need to trim down continuously, and if you had a speed trend of 5kt up, you have to trim one second every ten seconds ?
Interesting but it's not something that you can count on.

As for the other part I quoted, I never said boeing recommended something or something else. I doubt they would recommend looking at the airplane without touching the controls, anyway.
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