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Old 12th Aug 2008, 22:27
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Mr.Buzzy
 
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737NG "Please carry out full thrust TO"

Hi all,
I have a question relating to 737NG operation, hopefully someone can help.

If we are requested to fly a "full thrust takeoff" by engineering, we perform the takeoff without fixed or ATM derates.

Does the autothrottle system always advance the thrust levers to the FMC calculated N1 takeoff limit or (if the OAT differs from FMC entered data) will the autothrottle advance only to an N1 to give rated thrust? Would you ever expect to see a discrepancy between "needles and bugs" during a full noise takeoff with autothrottle?

ie. Requested to fly "full thrust TO". NO fixed or ATM derates entered into FMC.
An OAT of 12 is entered into FMC but actual temp at time of takeoff is actually say 8 degrees.

Many thanks for your help.

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