Dear fellow pilots,I was wondering when to apply CG correction during takeoff speed calculation concerning (increasing v speeds by 1 kt and decreasing flex by 2 degrees) is it when below 25% or 27% because the FCOM states the following which is confusing
please state the answer for both RTOW and LPC)
PER-TOF-TOC-14-10 P 1/10
CORRECTIONS DUE TO DIFFERENT TAKEOFF CONDITIONS
when the takeoff conditions are different from those provided on the chart,apply associated corrections.
Note: -if the RTOW chart is based on the CG being at 25%,the crew can determine the flexible temperature at a more forward CG by decreasing flexible temperature by 2 degrees.V speeds must be increased by 1 kt.
-25% is the basic certified limit,on which all takeoff computations are based.To take into account the operational margins,the above penalties must be applied when operational CG is forward 27%.