Flightsafety, simuflite, etc. takeoff and landing numbers are part 91 in their checklists. If your landing u must multiply 1.67 to the 91 number. If your taking off and it's wet you must add 15% to the 91 number. Does a percentage need to be added to the checklist for takeoff numbers if it's dry to make it a part 135 Checklist? Please answer only if you fly a part 135 jet.