Rocket/JT,
yeah thanks for that.
Rocket- going off that then slope IS adjusted for in forecast or ambient conditions- although avery only adjusts for the worst case scenario...
With the payload/load and trim sheet 727 one- if trip fuel with reserves exceeded the BRW and you had to get rid of payload- hard deciding what to get rid of? This concept doesnt seem to be well explored in either text- rather just reducing the BRW to max and then finding the resulting fuel reduction from that..
However..
if given the trip fuel though for a return flight as fuel is expensive in the destination (as Avery refers) you can't reduce it or you would obviously run out of fuel! would you apply a VR on the whole amount + FR + taxi/shutdown fuel... Given tripfuel means just flight fuel + maneouvering it seems illogical to have it as the return fuel and not subdivided in order to work out a VR?