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Use maximum thrust Maintain acceleration capability
Contaminated runway Use maximum thrust
(flex forbidden)
Improve stopping distance
Decrease time on runway.
Required by regulations.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-50 P 1/8
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 (see
previous section) and ensure that the actual takeoff weight is lower than the determined maximum
takeoff weight.
• Enter the RTOW chart with the wind condition 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: MSN,
When the takeoff conditions are different from those provided on the chart, apply the associated
corrections.
Note: If the RTOW chart is based on the CG being at 25 %, the crew can determine the flexible
temperature at a more forward CG by decreasing the flexible temperature by 2 °C. V1, VR
and V2 must be increased by 1 kt.
Applicable to:
,
,
MSN,,
When the takeoff conditions are different from those provided on the chart, apply the associated
corrections.
Applicable to: ,
, MSN
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Bnqqdbshnmr􀀃􀁄qd􀀃fhudm􀀃enq􀀃PMG􀀃≠􀀃0􀀃/02􀀃gO􀁄􀀃+􀀃􀁄hq􀀃bnmchshnmhmf􀀃NM+􀀃􀁄msh􀀃hbd􀀃NM􀀑
1. For a given takeoff weight and wind condition 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).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A318/A319/A320/A321 FLEET PER-TOF-TOC-14-50 P 2/8
FCOM 19 AUG 10
EXAMPLE 4
DATA : Actual takeoff weight = 75 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 013 hPa
Use the chart Refer to PER-TOF-TOC-10-30 RTOW EXAMPLE.
Determine the maximum permissible takeoff weight (Refer to PER-TOF-TOC-12-10
CONSERVATIVE CORRECTIONS 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 75 000 kg, CONF 1+F,
Flexible temperature.......................................................................................................... 48 °C
Enter the 10 kt head wind column and interpolate for 75 000 kg, CONF 2,
Flexible temperature.......................................................................................................... 48 °C
Equivalent performance is obtained from the two different configurations.
Retain CONF 1 + F as the speeds are lower.
Takeoff speeds are V1 = 152 kt, VR = 152 kt, V2 = 153 kt
Flexible temperature with air conditioning OFF.................................................................48 °C
Air conditioning correction .................................................................................................-5 °C
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Maximum flexible temperature...........................................................................................43 °C
Applicable to: MSN,
CONSERVATIVE CORRECTIONS FOR QNH AND BLEEDS
Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS
Corrections are given for QNH ≠􀀃0􀀃/02􀀃gO􀁄􀀃+􀀃􀁄hq􀀃bnmchshnmhmf􀀃NM+􀀃􀁄msh􀀃hbd􀀃NM􀀑
1. For a given takeoff weight and wind condition 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 = 75 000 kg
Head wind = 10 kt
　
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