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performance. If takeoff performance is not
limiting, consider the use of higher flap setting.
Extend engine life/improve aft body
clearance.
High altitude takeoff Use CONF2/CONF3 Improve comfort.
Badly paved runway
or
Accelerate stop distance limited
runway
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 (WEIGHT ENTRY)
A330/A340 FLEET PER-TOF-TOC-20-50 P 1/10
FCOM 19 AUG 10
DETERMINATION OF FLEXIBLE TAKEOFF TEMPERATURE AND SPEEDS
DETERMINATION OF FLEXIBLE TAKEOFF TEMPERATURE AND SPEEDS
Applicable to: ALL
Before determining the flexible temperature, calculate the maximum permissible takeoff weight
(Refer to PER-TOF-TOC-18-10 GENERAL) and ensure that the actual takeoff weight is lower than
the determined maximum takeoff weight.
• For a given configuration and wind value, enter the RTOW chart with the actual takeoff weight to
read the flexible temperature and associated speeds.
It is reminded that the takeoff weight is the sum of the weight entry and the delta weight displayed
in each box. It is allowed to interpolate between two consecutive rows and/or columns for weight
and for wind values not displayed on the chart.
• 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, read 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 D
DATA : Actual takeoff weight = 210 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 013 hPa
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A330/A340 FLEET PER-TOF-TOC-20-50 P 2/10
FCOM 19 AUG 10
Use the chart (Refer to PER-TOF-TOC-16-30 CHART LAYOUT). Determine the maximum
permissible takeoff weight (Refer to PER-TOF-TOC-18-10 CONSERVATIVE CORRECTIONS
FOR QNH AND BLEEDS: Example A). The actual weight being lower than the maximum one,
flexible takeoff is possible.
Enter the 10 kt head wind column and interpolate for 210 000 kg, CONF 1+F,
Flexible temperature.............................................................................................................. 54 °C
Enter the 10 kt head wind column and interpolate for 210 000 kg, CONF 2,
Flexible temperature.............................................................................................................. 54 °C
Equivalent performance is obtained from the two different configurations.
Retain CONF 2 as it improves aft body clearance.
Takeoff speeds are V1 = 124 kt, VR = 141 kt, V2 = 146 kt
Flexible temperature with air conditioning OFF.....................................................................54 °C
Air conditioning correction....................................................................................................-10 °C
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Maximum flexible temperature............................................................................................ =44 °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, read the flexible
temperature. Retain the takeoff speeds associated with the actual weight.
　
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