A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 6(20)

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V2 = 156 kt + 1 × 15/10 = 158 kt
• Check that the speeds are higher than minimum speeds from the chart and from VMU table.
Takeoff Configuration : 2
TOWV1 VR V2
TOW(RTOW) 258.9 140 149 156
FCOM correction(s)
Intermediate value 258.9 140 149 156
WET Correction 0.0 -1 0 0
Intermediate value 258.9 139 149 156
QNH Correction +2.9 +1 +2 +2
Final value 261.8 140 151 158
CORRECTIONS PRODUCED ON THE RTOW CHART
Applicable to: ,
Example : Refer to PER-TOF-TOC-10-30 CHART LAYOUT
Description of this correction : Refer to PER-TOF-TOC-10-20 DESCRIPTION OF THE
CORRECTIONS ON TAKEOFF CHART. The list of corrections is not exhaustive, however the most
commonly used corrections are wet runway, QNH, air conditioning and/or anti ice. A maximum of
three corrections can be produced on one chart.
To apply the corrections, proceed as follows :
1. Enter the chart with given OAT and wind to determine the maximum takeoff weight before
correction.
2. Apply the first correction :
If􀀃OAT􀀃is􀀃less􀀃than􀀃or􀀃equal􀀃to􀀃TVMC􀀃(line􀀃3),􀀃apply􀀃▹W􀀃correction􀀃from􀀃line􀀃1􀀃and􀀃▹V1/▹VR/▹V2􀀃
corrections from line 2.
Else,􀀃(for􀀃OAT􀀃greater􀀃than􀀃TVMC),􀀃apply􀀃▹W􀀃correction􀀃from􀀃line􀀃3􀀃and􀀃▹V1/▹VR/▹V2􀀃corrections􀀃
from line 4.
3. To combine a second (and third, as applicable) correction :
If􀀃OAT􀀃is􀀃less􀀃than􀀃or􀀃equal􀀃to􀀃TVMC􀀃(line􀀃3),􀀃apply􀀃▹W􀀃correction􀀃from􀀃line􀀃1􀀃and􀀃▹V1/▹VR/▹V2􀀃
corrections from line 2.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - MTOW CALCULATION (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-12-10 P 6/10
FCOM 19 AUG 10
Check that the resulting speeds are higher than the minimum speeds displayed on the RTOW
chart and that V2 is higher than the VMU limited speed (Refer to PER-TOF-TOD-25-20
GENERAL).
If􀀃OAT􀀃is􀀃higher􀀃than􀀃TVMC􀀃(line3)􀀃or􀀃if􀀃the􀀃above􀀃speed􀀃check􀀃is􀀃not􀀃fulfilled,􀀃apply􀀃▹W􀀃correction􀀃
from􀀃line􀀃3􀀃and􀀃▹V1/▹VR/▹V2􀀃corrections􀀃from􀀃line􀀃4.􀀃No􀀃speed􀀃check􀀃is􀀃required.􀀃
Note: QNH correction is given for ± 10 hPa. It is allowed to extrapolate ‐ linearly for greater QNH
deviation.
‐ When using a takeoff chart with failure cases, it is not allowed to combine two failure
cases.
‐ Corrections from the chart must be applied from top to bottom, i.e. in the RTOW (Refer to
PER-TOF-TOC-10-30 CHART LAYOUT), apply the wet correction first.
‐ If asterisk or dotted lines appear in the correction boxes, refer to more conservative
corrections provided in the FCOM.
‐ No speed check is required for the first correction. However, if the first influence
correction follows a conservative FCOM correction, a speed check is required.
EXAMPLE 2
DATA :: OAT = 25 °C
Head Wind = 10 kt
QNH = 1 028 hPa
WET runway
• 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).....................................................................................................221.7
• Enter the 10 kt head wind column and interpolate for 25 °C, CONF 2,
max TO weight (1 000 kg).....................................................................................................222.3
• Retain CONF 2 for takeoff.
• Read associated speeds as V1 = 152 kt, VR = 154 kt, V2 = 158 kt
• ApplyWET correction
For􀀃OAT􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹W􀀃=.................................................................................................􀀃0.0􀀃
Intermediate weight (1 000 kg)..............................................................................................222.3
Associated speeds,
V1 = 152 kt - 3 = 149 kt
VR = 154 kt - 0 = 154 kt
V2 = 158 kt - 0 = 158 kt
(No speed check required for first correction)
　
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