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Old 29th Jul 2011, 01:44
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felixthecat
 
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B777 TOGA inhibits

My understanding that TOGA during the takeoff and below 400ft disarms the LNAV/VNAV but gets rid of any derate. So it is thus useful in that the flight directors now command a straight ahead . In case of an engine out with no emergency turn very useful since it prevents the LNAV engaging at 50ft and telling you rubbish on the flight directors if there is a turn in the SID below 400ft

Now am I correct in that by NOT selecting TOGA the HDG select and TRK select are not available until 400ft? This making an emergency turn below 400ft difficult since the flight directors will still command the LNAV profile after 50ft which could be at odds with an emergency turn?

Last edited by felixthecat; 29th Jul 2011 at 02:16.
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