Pre Flight Checking
Note discussion concerning cabin disruption when pilots are calculating and inputting data.
Is it not possible for pilots to do all this in airport before boarding. Create a quiet pilots pre flight admin room with computers linked to their craft loaded with data from oil, baggage, cargo, weather, runway, flight details etc as soon as it is to hand.
This way data input can be checked by an airport administrator as being consistent for plane and admin before pilots board.
Computer self checks would also screen 3rd party input as being within normal range for this craft, cargo, fuel, destination and passengers.
If any data subsequently changes prior to take off the revised data is advised and input agreed by pilots and airport administrator, cross checking that the crafts settings have been updated and are consistent.