B737 classic level change
Scenario;
After departure and after the PM has pushed the N1 button and bugged either 210, 220, or 230 kts, many pilots request from the PM ..."level change 250 kts"... or words to that effect.
Question;
Why do they do that?
I am not sure if it's a sign that they know the a/c systems better than I do or if it's a complete waste of time.
From what I can see pressing level change does nothing to the actual N1 settings as the TOGA mode is setting climb thrust anyway.
I have read the books and am still unsure.
I originally thought that these pilots were mistakenly thinking that the thrust is at take-off power while TOGA is being displayed and they wanted to set climb thrust to avoid being at the higher setting for more than five minutes. I now wonder because some of the pilots doing it are pretty switched on and I've asked them but the answers don't quite add up to me. Any opinions would be appreciated.
Framer.