. Ex: A330-200 containerized loading in the compartment 1.
The compartment 1 of the A330-300 has 3 individual positions (11, 12, 13). It can be loaded with:
Either 6 containers LD3 (AKE) or 3 containers LD1 (AKC) or 3 containers LD6 (ALF)
Or 3 pallets 60.4 x 125 in (PKx) or 2 pallets 88 x 125 in (PAx) or 2 pallets 96 x 125 in (PMx)

The longitudinal allowance for each type of ULD is :

Container (LD3, LD1, LD6) ± 0.153 m (± 6.04 in)
Pallet 88" (PAx: 88 x 125 in) ± 0.2235 m (± 8.8 in)
Pallet 96" (PMx: 96 x 125 in) ± 0.244 m (± 9.6 in)
The maximum allowable weight (kg) per ULD is
Container (LD3, LD1) 1587 kg
 Container (LD6) 3174 kg
Pallet 88" (PAx: 88 x 125 in) 4626 kg
Pallet 96" (PMx: 96 x 125 in) 5103 kg
LD3 configuration
6 LD3 can be loaded
Eitem CG tolerance = Witem x tolerance
ELD3 CG tolerance = 1587 x ± 0.153 = ± 242.8 kg.m
E =±

E2 ×
6 =±
242.8 ×
6 =±
594.8 kg.m
LD3 configuration CG tolerance LD3 CG tolerance
LD1 configuration
3 LD1 can be loaded
Eitem CG tolerance = Witem x tolerance
ELD1 CG tolerance = 1587 x ± 0.153 = ± 242.8 kg.m
E =±

E2 ×
3 =±
242.8 ×
3 =±
420.5 kg.m
LD1configuration CG tolerance LD1CG tolerance LD6 configuration
3 LD6 can be loaded
Eitem CG tolerance = Witem x tolerance
ELD6 CG tolerance = 3174 x ± 0.153 = ± 485.6 kg.m
E =±

E2 ×
3 =±
485.6 ×
3 =±
841.1kg.m
LD6 configuration CG tolerance LD6 CG tolerance Pallet 88“ configuration
2 pallets can be loaded
Eitem CG tolerance = Witem x tolerance
EPallet 88“ CG tolerance = 4626 x ± 0.2235 = ± 1033.9 kg.m
E =±

E2 ×
2 =±
1033.9 ×
2 =±
1462.1 kg.m
Pallet 88"configuration CG tolerance Pallet88" CG tolerance
Pallet 96“ configuration
2 pallets can be loaded
Eitem CG tolerance = Witem x tolerance
EPallet 96“ CG tolerance = 5103 x ± 0.244 = ± 1245.2 kg.m
E =±

E2 ×
2 =±
1245.1×
2 =±
1760.9 kg.m
Pallet96" configuration CG tolerance Pallet 96" CG tolerance
The highest inaccuracy is obtained for Pallet 96“ configuration, this value is retained as ECargo1 CG tolerance = ± 1760.9 kg.m
Note: In this particular case (A330) the scenario with the highest inaccuracy corresponds to the heaviest pallets configuration, nevertheless it is not always the case and all scenarios need to be check for each individual computation.
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：Getting to Grips with Aircraft Weight and Balance(67)