Getting to Grips with Aircraft Weight and Balance(132)

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 Zone G : +200 kg .
zones if not included in DOW
Cargo distribution : Cargo 1 : 3 500 kg
Cargo 2 : 4 000 kg
Cargo 3 : 7 000 kg Deadload distribution in the cargo
Cargo 4 : 5 500 kg .
holds
Cargo 5 : 750 kg
Pax distribution : Cabin OA : 15 pax Passengers distribution in the cabinCabin OB : 120 pax Cabin OC : 105 pax .
sections
Fuel data : Takeoff fuel : 54 000 kgFuel on board at takeoff and fuel Fuel density : 0.79 kg/l .
density
LOADING LOADING

C. Operational Loading Documents

5.2.2. Balance table
a) Standard balance table
In a balance table, the index corrections due to a load in a cargo compartment or passengers in a cabin section are indicated thanks to tables, instead of graphical scales as in a balance chart. The user has to start from the DOW Index and then add or subtract the different index corrections to get the ZFW Index.
IATA AHM 519 gives information about the kind of information that must appear on a balance table (refer to next page):
A – The type of aircraft and version 
B –  A drawing of the aircraft layout showing : . The passenger cabin section . The position and numbering of holds and compartments 
C – Tabulated index corrections for each passenger cabin section 
D – Tabulated index corrections for each cargo compartment 
E – A balance diagram with shaded areas outside the forward and aft balance limits 
F – A balance diagram with shaded areas outside the forward and aft balance limits 
G – The influence of fuel on weight and balance. It can be provided on a separate fuel index table (identical to the one used with a balance chart) 
H – Final ZFW and TOW CG values in percentage of the Mean Aerodynamic Chord (%MAC). 
I – Index formula for DOW Index calculation 

As for the balance chart, optional information may appear on the balance table according to carriers requirements, such as the Index formula for DOW Index calculation (I).
. Numerical example
DOI : 105 CPT2 : 4000 kg CAB ZONE C : 105 pax
ZFWIndex : 105 . 8 + 19  = 116

LOADING LOADING
C. Operational Loading Documents
. Balance table example

 

C. Operational Loading Documents

b) Balance table with complement of 1000
To avoid negative index corrections that could be a source of mistake, carriers sometimes prefer to use a balance table with complement of 1000. In this case, index corrections are always positive. As an example, instead of .3, the index correction would be 997 (1000-3).
.
Complement of 1000 - example

.
Numerical example

 

DOI  : 510 CPT 1 : 2000kg CPT 4 : 1500kg CPT 5 : 300kg
CAB OA : 4 pax CAB OB : 7 pax CAB OC : 10 pax
ZFW Index : 2,514.2
　
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