I would like to adress my concerns regarding your performance database in terms of altitude and fuel calculation for all Airbus A320FAM, using the FSL-series in P3D.
Flying currenty a testflight MUC-LHR on an Airbus A321-231 (D-AIDM) with a cruise level offset of M1000 and performance bias of P005 with the following mass & balance data:
ESTIMATED TOW 74218 LAW 69798 ZFW 65842
First of all it came across that it would be way better to have the oportunity to select a Taxi Fuel in kg instead of minutes. With IAE engines and 15min taxi fuel, 150kg are assigned. From my experience with FSL, it takes already 80 kgs for APU and engine start which gives not too much room for taxi and those engines are quite hungry on ground. For our entire virtual Airline, taxi values do not match especially on CFM engines and A321-SL with high Take-Off Masses.
Conclusion: Apply a function to select a certain Taxi value instead of time?
Trip Fuel (Cruise)
Furthermore, climbing out, values on 4 different testflights showed a gap of around 400-500 kg between actual Fuel on Board and estimated Fuel on Board. This situation will resolve within 20-30 min in flight where those values start to match again.
Simbrief assigned a Flightlevel of 300 and later on at 340 on AUTO mode where the A321 is capable of doing initially FL380 on this flight. Do you have any hint for me how to get better planning results?
Best Regards and thank you!