Can any kind expert please tell me:
1. When, in general, is TO/GA used, e.g. is it normal to use it if it is available, or is it used only in special circumstances?
2. I understand that before engaging TO/GA on takeoff, you run the engines up manually to some point, e.g. 40% N1. What is the reason for this?
If it's hard to answer these for aircraft in general, then I'd be interested in hearing the story for (say) the 737-400, or any other specific aircraft.
MTIA...
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Brian Tooby
TCA Pilot #2658
Pilot's Assistant Home Page:
http://www.tooby.demon.co.uk/P_Assist_Home.html