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Equivalent performance is obtained from the two different configurations.
Retain CONF 2 as it improves aft body clearance.
Takeoff speeds are V1 = 133 kt, VR = 140 kt, V2 = 146 kt
• First, apply the correction (Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS).
Flexible temperature with air conditioning OFF.....................................................................48 °C
Air conditioning correction....................................................................................................-10 °C
Intermediate flexible temperature.......................................................................................... 38 °C
No speed correction.
• ApplyWET correction
For􀀃flexible􀀃temperature􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹Tflex􀀃=􀀃..................................................................0􀀃°C􀀃
Intermediate flex temperature................................................................................................38 °C
Associated speeds,
V1 = 133 kt - 1 = 132 kt
VR = 140 kt - 0 = 140 kt
V2 = 146 kt - 0 = 146 kt
Since the correction on V2 is 0, no V2 check against VMU limitation is necessary.
• Apply QNH correction
For􀀃flexible􀀃temperature􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹Tflex􀀃=.................................................................+0􀀃°C􀀃
Maximum flexible temperature............................................................................................ =38 °C
Check􀀃that􀀃OAT/TREF􀀃<􀀃flex􀀃temperature􀀃≤􀀃TMAXFLEX􀀃
No speed correction.
Takeoff speeds are V1 = 132 kt, VR = 140 kt, V2 = 146 kt
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-14-50 P 9/10
FCOM 19 AUG 10
Takeoff Configuration : 2
Tflex V1 VR V2
Chart temperature 48 133 140 146
FCOM correction(s) - 10 0 0 0
Intermediate value 38 133 140 146
WET Correction 0 -1 0 0
Intermediate value 38 132 140 146
QNH Correction 0 0 0 0
Final value 38 132 140 146
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.
EXAMPLE 6
DATA: Actual takeoff weight = 190 000 kg
Head wind = 10 kt
Air conditioning ON
QNH = 1 028 hPa
WET runway
Use the chart (Refer to PER-TOF-TOC-10-30 CHART LAYOUT). Determine the maximum
permissible takeoff weight (Refer to PER-TOF-TOC-12-10 COMBINING CORRECTIONS FROM
FCOM AND CHART: example 3). 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.............................................................................................................. 50 °C
• Enter the 10 kt head wind column and interpolate for 190 000 kg, CONF 2,
Flexible temperature.............................................................................................................. 50 °C
Equivalent performance is obtained from the two different configurations.
.Retain CONF 1 + F as the speeds are lower.
Takeoff speeds are V1 = 144 kt, VR = 144 kt, V2 = 148 kt
• First, apply the correction (Refer to PER-TOF-TOD-24 EFFECT OF QNH AND BLEEDS).
Flexible temperature with air conditioning OFF.....................................................................50 °C
Air conditioning correction......................................................................................................-6 °C
Intermediate flexible temperature.......................................................................................... 44 °C
No speed correction.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PERFORMANCE
TAKEOFF
TAKEOFF CHARTS - FLEXIBLE TAKEOFF (TEMPERATURE ENTRY)
A330/A340 FLEET PER-TOF-TOC-14-50 P 10/10
FCOM 19 AUG 10
• ApplyWET correction
For􀀃flexible􀀃temperature􀀃<􀀃TVMC􀀃(54􀀃°),􀀃▹Tflex􀀃=􀀃..................................................................0􀀃°C􀀃
Intermediate flex temperature................................................................................................47 °C
Associated speeds,
　
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