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Use CONF2/CONF3
or
Move towards left side of the takeoff chart.
Improve comfort.
Improve stopping distance.
Windshear expected along takeoff
path
Use maximum thrust. Maintain acceleration capability.
Contaminated runway Use maximum thrust.
(flex forbidden).
Improve stopping distance
Decrease time on runway.
Required by regulations.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-14-50 P 1/10
FCOM 19 AUG 10
DETERMINATION OF FLEXIBLE TAKEOFF TEMPERATURE AND SPEEDS
GENERAL
Applicable to: ALL
Before determining the flexible temperature, calculate the maximum permissible takeoff weight
(Refer to PER-TOF-TOC-12-10 DIRECT CHART READING) and ensure that the actual takeoff
weight is lower than the determined maximum takeoff weight.
• Enter the RTOW chart with the wind condition and selected configuration to interpolate for the
actual takeoff weight. Read the flexible temperature in the temperature column corresponding to
the actual weight.
• Repeat this process for the other configuration available. Select that configuration giving the
highest flexible temperature.
CORRECTIONS DUE TO DIFFERENT TAKEOFF CONDITIONS
Applicable to: ALL
When the takeoff conditions are different from those provided on the chart, apply the associated
corrections.
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Applicable to:
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Corrections􀀃are􀀃given􀀃for􀀃QNH􀀃≠􀀃1􀀃013􀀃hPa,􀀃air􀀃conditioning􀀃ON,􀀃anti􀀃ice􀀃ON.􀀃
1. For a given takeoff weight, wind condition and selected configuration, determine the flexible
temperature. Retain the takeoff speeds associated with the actual weight.
2. Apply the published temperature correction. To combine two or more corrections, add the different
corrections and apply to temperature value.
(No speed corrections required).
EXAMPLE 4
DATA: Actual takeoff weight = 220 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 013 hPa
Use the chart (Refer to PER-TOF-TOC-10-30 CHART LAYOUT). Determine the maximum
permissible takeoff weight (Refer to PER-TOF-TOC-12-10 CONSERVATIVE CORRECTIONS
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-14-50 P 2/10
FCOM 19 AUG 10
FOR QNH AND BLEEDS). The actual weight being lower than the maximum one, flexible takeoff
is possible.
Enter the 10 kt head wind column and interpolate for 220 000 kg, CONF 1+F,
Flexible temperature.............................................................................................................. 48 °C
Enter the 10 kt head wind column and interpolate for 220 000 kg, CONF 2,
Flexible temperature.............................................................................................................. 48 °C
Equivalent performance is obtained from the two different configurations.
Retain CONF 2 as it improves aft body clearance.
Takeoff speeds are V1 = 133 kt, VR = 140 kt, V2 = 146 kt
Flexible temperature with air conditioning OFF.....................................................................48 °C
Air conditioning correction.................................................................................................. –10 °C
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Maximum flexible temperature............................................................................................ =38 °C
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Applicable to: ,
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Corrections􀀃are􀀃given􀀃for􀀃QNH􀀃≠􀀃1􀀃013􀀃hPa,􀀃air􀀃conditioning􀀃ON,􀀃anti􀀃ice􀀃ON.􀀃
1. For a given takeoff weight, wind condition and selected configuration, determine the flexible
temperature. Retain the takeoff speeds associated with the actual weight.
2. Apply the published temperature correction. To combine two or more corrections, add the different
corrections and apply to temperature value.
(No speed corrections required).
EXAMPLE 4
DATA: Actual takeoff weight = 190 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 013 hPa
Use the chart (Refer to PER-TOF-TOC-10-30 CHART LAYOUT). Determine the maximum
permissible takeoff weight (Refer to PER-TOF-TOC-12-10 CONSERVATIVE CORRECTIONS
　
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