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Old 10th October 2012 | 05:12
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de facto
 
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Just to confirm, when you go in the N1 limit page during the setup on the ground, the values of N1 are adjusted according to temperature right?
Correct among other things such as derate selected or not,packs On or OfF...
Does the N1 increase with PA and/or temp increasing to compensate the thrust decrease at a given N1?
Your engine is flat rated at seal level and isa+15c,all that matters for the engine and therefore the N1 limit is TEMP and Pressure Altitude...have a look in the qrh under GA N1 .
On a standard day, 0 ft AMSL, 15°C, how much thrust would one get in pushing the thrust lever until the far forward end
If you are flying 800s,it would be 27300 lbs of thrust,but you would over thrust the engine.Only if ground contact imminent AND on two engines may you add thrust over derate if used.(vmca issue).
.
Finally, why is the temp entered by the crew and not measured by the aircraft?
Because we need to earn the money no?
Seriously the latest fmcs do have the function of oat auto selection.

Last edited by de facto; 10th October 2012 at 05:15.
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