I can create a flight plan and enter it into the FMC (PMDG 737 900) but i seem to have a problem with the decent.
The flight all goes to plan, cruising at an altitude of 35000ft but i have a real problem meeting the speed and decent contstraints which FSN builds into the plan. I always get a message which says Drag required and then it cancells the auto pilot.
Anyone know where i'm going wrong?
Thanks in advance for your help.
First Officer
Chief Captain