Originally Posted by
iggy
FOB = 9 tons
EFOB at destination in FMGC = 3 tons
Therefore, trip fuel is 6 tons, 6 x 1.8 = 10.8 tons actual trip fuel with landing gear failure.
I honestly hope it goes like this because this is how I have been explaining it to my trainees for years now...
This calculation is not correct, I'm afraid. The PENALTY is 180%. Therefore the total fuel used would be the fuel normally used PLUS the penalty. You have only calculated the penalty (6x1.8 = 10.8) The total fuel burn would thus be the 6 tonnes, PLUS the 10.8. = 16.8 tonnes. Also you may need to include the penalty for open gear doors of 15%. To be conservative just multiply the fuel-burn by 3.