egt limits for b744
Need some clarification on the egt limits for PW4056 equipped B744s.The EGT brief for my outfit goes like this....
Ops Condition Temp limits Time limit
------------------ -------------- ------------
T/O 650 C 5 min
Max Con 625 C Con
Start Grnd 535 C
Start Air 650 C
For the T/O phase,when does the time limit start...upon reaching 650C or setting of T/O thrust?And if 650C is not reached during T/O, can the engines be operated at that power setting indefinitely,provided the max continuous limit is adhered to?If possible ,please provide the source of any answers so that I can disseminate the info,or deflect accusations of duff gen!