A330/A340机组操作手册 FLIGHT CREW OPERATING MANUAL FCOM 6(43)

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4. Check that the final flexible temperature is :
‐ higher than OAT and TREF
‐ limited to TMAXFLEX
If the check is fulfilled, retain final flexible temperature as the one to be inserted in the MCDU.
If the check is not fulfilled, (final flexible temperature lower than OAT or TREF), no flexible
takeoff is possible.
Use TOGA thrust and retain speeds that have been calculated for the maximum permissible
takeoff weight. (Refer to PER-TOF-TOC-20-60 FLEXIBLE TAKEOFF NOT POSSIBLE)
Note: ‐ QNH correction is given for ± 10 hPa. It is allowed to extrapolate linearly for greater QNH
deviation.
‐ Corrections from the chart must be applied from top to bottom, i.e. in the RTOW (Refer to
PER-TOF-TOC-16-30 CHART LAYOUT), apply the wet influence first.
Note: ‐ When the flexible temperature is higher than TVMC, it is allowed to limit the flexible
temperature to TVMC and apply only corrections from lines 1 and 2.
If asterisk or dotted lines appear in the correction ‐ boxes, refer to more conservative
corrections provided in the FCOM.
EXAMPLE E
DATA : Actual takeoff weight = 190 000 kg
Head wind = 10 kt
QNH = 1 028 hPa
WET runway
Air conditioning OFF
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A330/A340 FLEET PER-TOF-TOC-20-50 P 7/10
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 CORRECTIONS PRODUCED ON THE
RTOW CHART). The actual weight being lower than the maximum one, flexible takeoff is possible.
Enter the 10 kt head wind column and interpolate for 190 000 kg, CONF 1+F,
Flexible temperature.............................................................................................................. 51 °C
Enter the 10 kt head wind column and interpolate for 190 000 kg, CONF 2,
Flexible temperature.............................................................................................................. 50 °C
Retain CONF 1 + F.
Takeoff speeds are V1 = 147 kt, VR = 147 kt, V2 = 151 kt
ApplyWET correction
For􀀃flexible􀀃temperature􀀃≤􀀃TVMC􀀃(57􀀃°),􀀃▹Tflex􀀃=...................................................................0􀀃°C􀀃
Intermediate flex temperature..............................................................................................=51 °C
Associated speeds,
V1 = 147 kt - 0 = 147 kt
VR = 147 kt - 0 = 147 kt
V2 = 151 kt - 0 = 151 kt
Since the correction on V2 is 0, no V2 check against VMU limitation is necessary.
Apply QNH correction
For􀀃flex􀀃temperature􀀃≤􀀃TVMC􀀃(57􀀃°),􀀃▹Tflex􀀃=......................................................................􀀃+0􀀃°C􀀃
Maximum flexible temperature............................................................................................ =51 °C
Check􀀃that􀀃OAT/TREF􀀃<􀀃flex􀀃temperature􀀃≤􀀃TMAXFLEX􀀃
No speed correction.
Takeoff speeds are V1 = 147 kt, VR = 147 kt, V2 = 151 kt
Takeoff Configuration : 1 + F
Tflex V1 VR V2
Chart temperature 51 147 147 151
FCOM correction(s)
Intermediate value 51 147 147 151
WET Correction 0 0 0 0
Intermediate value 51 147 147 151
QNH Correction 0 0 0 0
Final value 51 147 147 151
COMBINING CORRECTIONS FROM FCOM AND CHART
Applicable to:
1. Apply corrections from FCOM (Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS).
2. Apply corrections from the RTOW chart.
Apply speed corrections except for QNH and bleed influences.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (WEIGHT ENTRY)
A330/A340 FLEET PER-TOF-TOC-20-50 P 8/10
FCOM 19 AUG 10
EXAMPLE F
DATA : Actual takeoff weight = 220 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 028 hPa
WET runway
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 COMBINING CORRECTIONS FROM
FCOM AND CHART). 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.............................................................................................................. 54 °C
• Enter the 10 kt head wind column and interpolate for 220 000 kg, CONF 2,
　
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