AIRCRAFT SYSTEMS - e-Crew

A330/A340
FLIGHT CREW
OPERATING MANUAL
Applicable to: ALL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
GENERAL
SPEED/MACH CONTROL
In flight, either the AP/FD pitch control or the autothrust may acquire and hold a target speed or
Mach number, according to the engaged modes.
The speed control is:
‐ Managed when the target comes from the FMGES
‐ Selected when the target comes from the SPD/MACH FCU window.
Applicable to: ALL
MANAGED SPEED/MACH TARGET
When the speed target is managed, the SPD/MACH window of the FCU shows dashes, and the
corresponding dot is lighted. The PFD speed scale shows the speed target in magenta.
ENGAGEMENT CONDITIONS
The SPD target is managed whenever AP or FD is engaged and one of the following occurs:
‐ The flight crew pushes in the SPD/MACH knob
‐ V2 is inserted in the MCDU
‐ The speed reference system (SRS) is engaged (takeoff or go-around mode).
Note: At takeoff, SRS will not engage if V2 is not available.
DISENGAGEMENT CONDITIONS
Managed speed disengages any time the flight crew selects a speed target on the FCU, or if the
speed was preselected.
SPEED PROFILE
The form of the managed SPD profile depends on the lateral NAV mode.
� If NAV mode is engaged, the SPD profile takes into account all the constraints linked to
the flight plan.
The SPD profile is:
V2 - SPD LIM - SPD CSTR (if applicable) - ECON CLB SPD/MACH - ECON CRZ MACH -
ECON or selected DES MACH/SPD - SPD LIM - SPD CSTR (if applicable) - HOLD SPD (if
applicable) - VAPP
� If NAV mode is not engaged, the SPD/MACH constraints are not considered.
The SPD profile is:
V2 - SPD LIM - ECON CLB SPD/MACH - ECON CRZ MACH - ECON or selected DES
MACH/SPD - SPD LIM - VAPP.
RJA A330/A340 FLEET DSC-22_30-40 P 1/4
FCOM A to B → 07 APR 11