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presence of clearway.
Select the table applicable to your case. The runway length in the table corresponds to the
available takeoff run (TORA).
Do not interpolate for runway length. Use the shorter runway length.
3. Apply the corrections shown in the following tables :
• The first two lines give the weight or flexible temperature corrections and the associated speeds
corrections to be applied when OAT (for maximum takeoff weight determination) or flexible
temperature is below or equal to the temperature value given in line 3 (TVMC).
• The fourth and fifth lines give the weight, flexible temperature and speed corrections when OAT
or flex temperature is above TVMC.
The above corrections are valid for airfields up to 2 000 ft pressure altitude. Above 2 000 ft
pressure altitude TVMC must be decreased by 1 °C per 300 ft above 2 000 ft.
4. Check that the corrected V1 is greater than the minimum V1 (V1 limited by VMCG) value shown
on the RTOW chart.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - TAKEOFF PERFORMANCE
A330/A340 FLEET PER-TOF-CTA-40 P 2/42
FCOM 19 AUG 10
If the corrected V1 is below minimum V1 :
• Actual TOW is limited by maximum TOW, retain minimum V1 as V1 and further decrease weight
by 5 000 kg per 1 kt difference between V1 values.
• Actual TOW lower than maximum TOW
If the maximum TOW has a corrected V1 equal to or ‐ above minimum V1, retain minimum V1
as V1 and decrease flexible temperature by 2 °C per knot difference between minimum V1
and V1 corresponding to actual TOW.
‐ In the rare cases when the corrected V1 corresponding to maximum TOW falls below
minimum V1, retain minimum V1 as V1 and either decrease maximum TOW by
5 000 kg per knot difference between V1 values or decrease flexible temperature by 2 °C per
knot difference between minimum V1 and V1 corresponding to corrected actual TOW.
In any case, check that the corrected flexible temperature is higher than OAT and Tref.
5. Check that VR and V2 are above the minimum VR and V2 values shown on the RTOW chart.
6. Check that V2 is above the minimum V2 value due to VMU Refer to PER-TOF-TOC-12-20 VMU
CHECK
If V2 or VR are below the minimum values, this method is not valid, a specific takeoff chart must
be computed.
Note: • Do not interpolate between values, always refer to the lower runway length.
• Do not extrapolate below the shortest runway length provided in the tables.
• When using the following tables, the flexible temperature is limited to a maximum of
51 °C.
• If no minimum speed value is available, use the conservative values (Refer to
PER-TOF-TOD-25-20 GENERAL).
CAUTION The following tables have been established for TOGA or FLEXIBLE thrust. Do not
use them for BUMP or derated thrust.
TAKEOFF FROM A WET RUNWAY
Applicable to: ,
1. Determine the maximum takeoff weight or flexible temperature and associated speeds on dry
runway.
2. Two sets of tables are given depending on the use of thrust reversers and the presence of
clearway. Select the table to use as applicable to your case.
The runway length in the table corresponds to the available takeoff run (TORA).
3. Apply the corrections shown in the table to the maximum takeoff weight or flexible temperature
and associated speeds determined on dry runway.
4. Check that takeoff speeds are above the minimum values shown on the RTOW chart.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
RUNWAY CONTAMINATION - TAKEOFF PERFORMANCE
A330/A340 FLEET PER-TOF-CTA-40 P 3/42
FCOM 19 AUG 10
If one or more speeds are below these values apply the following procedure :
• Actual TOW = maximum TOW
if V1 is lower than the minimum V1 (V1 limited by ‐ VMCG), take this last value as V1 and
further decrease weight by 4 000 kg (8 800 lb) per knot difference between both values.
Check that VR and V2 are higher or equal to the minimum values.
‐ if VR or/and V2 fall below the minimum value, takeoff is not possible.
• Actual TOW lower than maximum TOW
‐ If V1 corresponding to the actual TOW is lower than the minimum V1 (V1 limited by VMCG) :
• If maximum TOW has a V1 equal or above minimum V1, retain minimum V1 as V1 and
decrease flexible temperature by 3 °C per knot difference between them.
• In the rare case when the V1 corresponding to the maximum TOW falls below the minimum
V1, decrease maximum TOW by 4 000 kg (8 800 lb) per knot difference between them.
Limit the actual TOW to the value found after this decrement. Take V1 equal to minimum
V1 and decrease flexible temperature by 3 °C per knot difference between this value and
　
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