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TAKEOFF ROLL
Applicable to: ALL
Once the thrust is set, the PF announces the indications on the FMA. The PNF must check that the thrust is set by 80 kt and must announce “Thrust Set”.
The Captain must keep his hand on the thrust levers when the thrust levers are set to TOGA/FLX notch and until V1.
On a normal takeoff, to counteract the pitch up moment during thrust application, the PF should apply half forward (full forward in cross wind case) sidestick at the start of the takeoff roll until reaching 80 kt. At this point, the input should be gradually reduced to be zero by 100 kt.
The PF should use pedals to keep the aircraft straight. The nosewheel steering will be effective until reaching 100 kt but its authority decreases at a pre-determined rate as the groundspeed increases and the rudder becomes more effective. The use the tiller is not recommended during takeoff roll, because of its high efficiency, which might lead to aircraft overreaction.
For crosswind takeoffs, routine use of into wind aileron is not necessary. In strong crosswind conditions, small lateral stick input may be used to maintain wings level, if deemed necessary due to into wind wing reaction, but avoid using large deflections, resulting in excessive spoiler deployment
NORMAL OPERATIONS
TAKEOFF
which increase the aircraft tendency to turn into the wind (due to high weight on wheels on the spoiler extended side), reduces lift and increases drag. Spoiler deflection becomes significant with more than half sidestick deflection.
As the aircraft lifts off, any lateral stick input applied will result in a roll rate demand, making aircraft lateral control more difficult. Wings must be level.
In case of low visibility takeoff, visual cues are primary means to track the runway centerline. The PFD yaw bar provides an assistance in case of expected fog patches if ILS available.
TYPICAL AIRCRAFT ATTITUDE AT TAKEOFF AFTER LIFT-OFF
Applicable to: ALL
At take off, the typical all engine operating attitude after lift-off is about 15 °.
ROTATION
Applicable to: ALL
INITIAL STICK INPUT CALIBRATION IN TRAINING
In training, during taxi, the crew may calibrate the appropriate effort and displacement for the initial stick input for rotation (2/3 back-stick), by pulling aft on the stick and observing the position of the stick cross symbol on the PFD, compared to the stick position reference square.
side stick input calibRation during taxi
Note: the cross is not to be used by PF during the takeoff, whereas the PNF can check the validity of the PF initial stick input.
ROTATION TECHNIQUE
Rotation is conventional. During the takeoff roll and the rotation, the pilot flying scans rapidly the outside visual reference and the PFD. Until airborne, or at least until visual cues are lost, this
scanning depends on visibility conditions (the better the visibility, the higher the priority given to outside visual references). Once airborne, the PF then controls the pitch attitude on the PFD using FD bars in SRS mode which is then valid.
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A330/A340 机组训练手册 FCTM Flight Crew Training Manual 1(44)
