Maximum allowable take-off mass 64
400 kg; maximum landing mass 56200 kg; maximum zero fuel mass 53 000 kg; dry
operating mass 35 500 kg; estimated load 14 500 kg; estimated trip fuel 4 900
kg; minimum take-off fuel 7 400 kg. Find: maximum additional load
This is a mass and balance question
there are 3 mass limits you must consider MTOM, MZFM, MLM and each time you
go flying, one of these will be critical in terms of maximum traffic load.
So work out the maximum traffic load
for each of these limits:
We know that at any time AIRCRAFT
MASS = DOM + TL + FUEL
. We use this
At T/O
Max TL = MTOM DOM FUEL =
64 400 35 500 7 400 = 21 500 kg
ZFM
Max TL = MZFM DOM = 53 000
35 500 = 17 500 kg
On landing
Max TL = MLM DOM
FUEL = 56 200 35 500 2500 = 18 200 kg
SO, the actual LIMIT comes from the
ZFM calculation
. 17 500 kg
3000kg more than our estimated TL (14 500kg)