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THE ALPHA LOCK FUNCTION
The slats alpha/speed lock function will prevent slat retraction at high AOA or low speed at the moment the flap lever is moved from Flaps 1 to Flaps 0. "A. LOCK" pulses above the E/WD Slat indication. The inhibition is removed and the slats retract when both alpha and speed fall within normal values. This is a normal situation at high gross weight. If alpha lock function is triggered, the crew will continue the scheduled acceleration, allowing further slats retraction.
IMMEDIATE TURN AFTER TAKE-OFF
Applicable to: ALL
Obstacle clearance, noise abatement, or departure procedures may require an immediate turn after take-off. Provided FD commands are followed accurately, the flaps and slats may be retracted using the normal procedure as FD orders provide bank angle limits with respect to speed and configuration.
NORMAL OPERATIONS
TAKEOFF
LOW ALTITUDE LEVEL-OFF
Applicable to: ALL
If the aircraft is required to level off below the acceleration altitude, ALT* engages and SRS disengages. The “LVR CLB” message flashes on the FMA and the target speed goes to the initial climb speed. In this case, the crew should expect a faster than normal acceleration, and be prepared to retract the flaps and slats promptly.
NOISE ABATEMENT TAKE-OFF
Applicable to: ALL
Noise Abatement Procedures will not be conducted in conditions of significant turbulence or windshear.
NORMAL OPERATIONS
TAKEOFF
NOISE ABATEMENT TAKE-OFF
NORMAL OPERATIONS
CLIMB
CLIMB THRUST
Applicable to: ALL
During the climb, the thrust levers are in the CL detent, the A/THR is active in thrust mode and the FADECs manage the thrust to a maximum value depending upon ambient conditions.
Engine life may be extended by operating the engines at less than maximum climb rated thrust. Two levels of derated climb thrust can be selected on the PERF CLB page:
? D1, which reduces the maximum climb thrust by 10 %
? D2, which reduces the maximum climb thrust by 15 %.
If a derated climb has been entered prior to departure, then "THR DCLB 1(2)" will be displayed on the FMA as the thrust levers are set to CL detent at the thrust reduction altitude. During the latter stage of a climb to higher levels, the derate is progressively reduced to zero by the FADECs. Climb performance will be reduced when using derated climb thrust but the ceiling will not be affected. The crew may modify or cancel the level of derate at any stage through the MCDU PERF CLB page. Should an engine failure occur during a derated climb, derated climb thrust is deselected by selecting MCT.
The derated climb slightly increases fuel consumption and must be taken into account for fuel quantity computation (Refer to FCOM/99 Duref Cible FCOM).
AP/FD CLIMB MODES
Applicable to: ALL
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A330/A340 机组训练手册 FCTM Flight Crew Training Manual 1(49)
