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A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-12-10 P 7/10
FCOM 19 AUG 10
• Apply QNH correction
For􀀃OAT􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹W􀀃=􀀃1.7􀀃×􀀃15/10􀀃=.......................................................................􀀃+􀀃2.5􀀃
Maximum permissible takeoff weight (1 000 kg)................................................................... 224.9
Associated speeds,
V1 = 149 kt + 1 × 15/10 = 150 kt
VR = 154 kt + 1 × 15/10 = 156 kt
V2 = 158 kt + 1 × 15/10 = 160 kt
• Check that the speeds are higher than minimum speeds from the chart and from VMU table.
Takeoff Configuration : 2
TOWV1 VR V2
TOW(RTOW) 222.3 152 154 158
FCOM correction(s)
Intermediate value 222.3 152 154 158
WET Correction 0.0 -3 0 0
Intermediate value 222.3 149 154 158
QNH Correction +2.6 +1 +2 +2
Final value 224.9 150 156 160
COMBINING CORRECTIONS FROM FCOM AND CHART
Applicable to:
Proceed as follows :
1. Enter the chart with selected configuration, OAT and wind to read the maximum takeoff weight.
2. Apply corrections from FCOM to determine an intermediate weight. Interpolate associated speeds
for intermediate weight in the same column (same wind and configuration).
3. Apply corrections from RTOW chart as explained above.
EXAMPLE 3
DATA :: OAT = 25 °C
Head wind = 10 kt
Air conditioning ON
QNH = 1 028 hPa
WET runway
1. Use the chart : (Refer to PER-TOF-TOC-10-30 CHART LAYOUT).
Enter the 10 kt head wind column and interpolate for 25 °C, CONF 1+F,
Max TO weight (1 000 kg) air conditioning OFF................................................................... 254.4
Enter the 10 kt head wind column and interpolate for 25 °C, CONF 2,
Max TO weight (1 000 kg) air conditioning OFF................................................................... 258.9
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-12-10 P 8/10
FCOM 19 AUG 10
Retain CONF 2 for takeoff configuration.
2. First, apply the correction : (Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS).
Max TO weight (1 000 kg) air conditioning OFF................................................................... 258.9
Air conditioning correction..................................................................................................... - 17.5
Intermediate weight................................................................................................................241.4
Interpolate takeoff speeds for 241.4 (1 000 kg) in the 10 kt head wind column,
V1 = 137 kt , VR = 144 kt , V2 = 151 kt
3. ApplyWET correction
For􀀃OAT􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹W􀀃=.................................................................................................􀀃0.0􀀃
Intermediate weight................................................................................................................241.4
Associated speeds,
V1 = 137 kt - 1= 136 kt
VR = 144 kt - 0 = 144 kt
V2 = 151 kt - 0 = 151 kt
Check that the speeds are higher than minimum speeds from the chart and from VMU table.
Apply QNH correction
For􀀃OAT􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹W􀀃=􀀃1.9􀀃×􀀃15/10􀀃=.......................................................................􀀃+􀀃2.9􀀃
Maximum permissible takeoff weight.....................................................................................244.3
Associated speed,
V1 = 136 kt + 1 × 15/10 = 137 kt
VR = 144 kt + 1 × 15/10 = 146 kt
V2 = 151 kt + 1 × 15/10 = 153 kt
Check that the speeds are higher than minimum speeds from the chart and from VMU table. (It
is reminded that if the speed checks are not fulfilled, the corrections must be recalculated using
those provided on lines 3 and 4).
Since the speed check is fulfilled :
Maximum permissible takeoff weight = 244.3 (1 000 kg)
V1 = 137 kt, VR = 146 kt, V2 = 153 kt.
Takeoff Configuration : 2
TOWV1 VR V2
TOW(RTOW) 258.9
FCOM correction(s) - 17.5
Intermediate value 241.4 137 144 151
WET Correction 0.0 -1 0 0
Intermediate value 241.4 136 144 151
QNH Correction + 2.9 + 1 + 2 + 2
Final value 244.3 137 146 153
　
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