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A330/A340<br />
FLIGHT CREW<br />
OPERATING MANUAL<br />
Applicable to: MSN 0014-0043<br />
<strong>AIRCRAFT</strong> <strong>SYSTEMS</strong><br />
AUTO FLIGHT - FLIGHT GUIDANCE<br />
AP/FD VERTICAL MODES - ALTITUDE ACQUIRE MODE<br />
DISENGAGEMENT CONDITIONS<br />
The mode is disengaged by one of the following conditions:<br />
‐ Engagement of V/S mode on current vertical speed, by turning the FCU ALT knob by more than<br />
250 ft.<br />
‐ Engagement of another vertical mode, provided the FCU altitude has been changed by more than<br />
250 ft.<br />
Applicable to: MSN 0970-1002<br />
DISENGAGEMENT CONDITIONS<br />
The mode is disengaged by one of the following conditions:<br />
‐ Engagement of V/S mode on current vertical speed, by turning the FCU ALT knob by more than<br />
250 ft.<br />
If within 5 s after reversion to V/S (FPA) the flight crew does not confirm the altitude target change<br />
by:<br />
• Pulling the ALT knob, or<br />
• Setting a new V/S (FPA) target, or<br />
• Pushing the ALT pb on the FCU,<br />
then, a triple click aural warning sounds, and the V/S (FPA) is boxed white for additional 10 s.<br />
‐ Engagement of another vertical mode, provided the FCU altitude has been changed by more than<br />
250 ft.<br />
Applicable to: ALL<br />
GUIDANCE<br />
ALT* mode has an internal V/S guidance that is a direct function of the difference between present<br />
altitude and the altitude target.<br />
ALT* and ALT CST* modes have internal protections that decreases the vertical speed when VLS or<br />
VMAX is reached. (VLS or VMAX becomes the priority target).<br />
The system switches automatically to ALT (altitude hold) when the altitude deviation becomes less<br />
than 40 ft.<br />
RJA A330/A340 FLEET DSC-22_30-70-65 P 2/4<br />
FCOM D to E → 03 MAY 11
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