To perform mid haul flights you would want to backup and edit the file 'MCDU2c' found in C:\Program Files (x86)\Steam\steamapps\common\FSX\SimObjects\Airplanes\Aerosoft Airbus A320_A321 Base\Panel_Fallback\AB_MCDU2 and change it to a max fuel figure you want or know highlighted in red.   <!-- A321 -->  (L:AB_TypeIdent, number) 41 ==  (L:AB_TypeIdent, number) 42 == ||  if{   220 (&gt;L:MCDU2_FP_max_Pax, number)   17.00 (&gt;L:MCDU2_FP_max_Cargo, number)   32.80