(NOT A PILOT)
I have a said operators performance preamble and line training document. After studying the 737 800 performance reference handbook and operator performance preamble, i'm needing to know something which i can't quite grasp.
Below is a quote from the line training document...
4.8.1 EFB and Preamble data - Dispatch Planning
The dispatch landing performance data in the **** EFB OPT and Preamble are based on use of maximum manual braking and auto speedbrakes, with no thrust reverse credit. The Dry runway figures are factored by 1.67. The Wet runway figures are the Dry factored figures increased by a further 15%. The EFB OPT or Preamble tables shall be used prior to dispatch (dispatch planning stage) to satisfy the AIR OPS 1 requirement and to determine the maximum take-off weight (i.e. payload and fuel) at which the aeroplane can land at the destination or alternate airport within available landing distance in expected conditions.
I understand it all except maximum takeoff weight weight + trip fuel and payload. I know its not meaning certification MTOW but rather the lowest of the three from my dropbox link
https://www.dropbox.com/s/0kmp0szdl4...%2018.jpg?dl=0
Why is this considered as trip fuel will be burned off?
Thankyou.