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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 9/10
FCOM 19 AUG 10
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................................................................... 221.7
Enter the 10 kt head wind column and interpolate for 25 °C, CONF 2,
Max TO weight (1 000 kg) air conditioning OFF................................................................... 222.3
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................................................................... 222.3
Air conditioning correction.......................................................................................................- 3.8
Intermediate weight................................................................................................................218.5
Interpolate takeoff speeds for 218.5 (1 000 kg) in the 10 kt head wind column,
V1 = 150 kt , VR = 152 kt , V2 = 157 kt
3. ApplyWET correction
For􀀃OAT􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹W􀀃=.................................................................................................􀀃0.0􀀃
Intermediate weight................................................................................................................218.5
Associated speeds,
V1 = 150 kt - 3= 148 kt
VR = 152 kt - 0 = 152 kt
V2 = 157 kt - 0 = 157 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􀀃=􀀃1.7􀀃×􀀃15/10􀀃=.......................................................................􀀃+􀀃2.6􀀃
Maximum permissible takeoff weight.....................................................................................221.1
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-12-10 P 10/10
FCOM 19 AUG 10
Associated speed,
V1 = 148 kt + 1 × 15/10 = 148 kt
VR = 152 kt + 1 × 15/10 = 154 kt
V2 = 157 kt + 1 × 15/10 = 159 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 = 221.1 (1 000 kg)
V1 = 149 kt, VR = 154 kt, V2 = 159 kt.
Takeoff Configuration : 2
TOWV1 VR V2
TOW(RTOW) 222.3
FCOM correction(s) - 3.8
Intermediate value 218.5 151 152 157
WET Correction 0.0 -3 0 0
Intermediate value 218.5 148 152 157
QNH Correction + 2.6 + 1 + 2 + 2
Final value 221.1 149 154 159
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-12-20 P 1/2
FCOM 19 AUG 10
VMU CHECK
VMU CHECK
Applicable to:
For the V2 limited by VMU/VMCA values per configuration : Refer to PER-TOF-TOD-25-20
GENERAL. For each pressure altitude and weight combination, two speed values are given. The first
value applies to all temperatures less than or equal to ISA +15. The second value applies to ISA +40.
For a temperature between ISA +15 and ISA +40, interpolate linearly between the two given speeds.
The speeds in the tables are checked for VMCA limitation.
Note: The minimum V2 speed due to VMCA is given on the RTOW chart.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
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