.
Add 1 kt per 1000 ft above 20000 ft
.
Subtract 10 kt with one engine out.
(A346: Green dot speed is not modified with one engine inoperative)
PROTECTION.SPEEDS
The protection speeds V. PROT, V. MAX, VSW displayed on the PFD speed scale are computed by the PRIM based on aerodynamic data.
V. PROT
V. PROT is the speed that corresponds to the angle of attack at which the AOA protection becomes active. In normal law it is represented by the top of a black and amber strip on the PFD speed scale.
V. FLOOR
V. FLOOR is the speed that corresponds to the angle of attack at which the A/THR triggers TOGA thrust. This value is not displayed on the PFD, but is normally situated between V. PROT and V. MAX.
V. MAX
V. MAX is the speed that corresponds to the maximum angle of attack that may be reached in pitch normal law. In normal law it is represented by the top of the red strip on the PFD speed scale.
VSW
VSW is the stall warning speed. It is represented by the top of the red and black strip on the PFD speed scale and is only operative when the flight control law is degraded to alternate or direct.
10.50.4
A330/A340 Training Guide REV 1 (6 JUN 05)
FCTM Operating Speeds
VMAX
VMAX is the maximum permitted speed, represented by the bottom of the red and black strip on the PFD speed scale. It is determined by the FE computer, according to the aircraft configuration and is equal to VMO (or speed corresponding to MMO), VLE or VFE.
LIMIT.SPEEDS VMCG
VMCG is the minimum speed on the ground during take-off, at which the aircraft can be controlled by the use of the primary flight controls only, after a sudden failure of the critical engine, with the other engine(s) remaining at take-off thrust.
VMCA
VMCA is the minimum control speed in flight at which the aircraft can be controlled with a maximum bank angle of 5., if one engine fails, with the other engine(s) remaining at take-off thrust (take-off flap setting, gear retracted).
VMCL
VMCL is the minimum control speed in flight at which the aircraft can be controlled with a maximum bank angle of 5., if one engine fails, with the other engine(s) remaining at takeoff thrust (approach flap setting).
VMCL-2.(A340)
VMCL-2 is the minimum control speed in flight at which the aircraft can be controlled with a maximum bank angle of 5., if two engines fail on the same side, with the other engine(s) at TOGA thrust (approach flap setting).
VFE
VFE is the maximum speed for each flap configuration.
VLE
VLE is the maximum speed with landing gear extended.
VLO
VLO is the maximum speed for landing gear operation.
VMO
VMO is the maximum speed.
A330/A340 10.50.5 Operating Speeds
FCTM REV 1 (6 JUN 05)
VFE.NEXT
VFE NEXT is the maximum speed for the next flap lever selection (further extended position).
OTHER.SPEEDS V1
V1 is the highest speed, during take-off, at which there is a choice of either continuing the take-off or stopping the aircraft. It is represented by "1" on the PFD speed scale and is inserted manually via the PERF TAKE-OFF page.
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