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AIRCRAFT SYSTEMS - e-Crew

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A330/A340<br />

FLIGHT CREW<br />

OPERATING MANUAL<br />

Applicable to: ALL<br />

<strong>AIRCRAFT</strong> <strong>SYSTEMS</strong><br />

AUTO FLIGHT - FLIGHT GUIDANCE<br />

AP/FD COMMON MODES - TAKEOFF<br />

GENERAL<br />

Takeoff mode combines the SRS (Speed Reference System) vertical mode with the RWY lateral<br />

mode. Both are simultaneously engaged, but may be disengaged separately.<br />

Takeoff mode is available:<br />

‐ During the takeoff run and initial climb for FD bars guidance<br />

‐ 5 s after lift-off for AP use.<br />

Applicable to: ALL<br />

GENERAL<br />

SRS (SPEED REFERENCE SYSTEM)<br />

SRS mode controls pitch to steer the aircraft along a path in the vertical plan at a speed defined by<br />

the SRS guidance law.<br />

Applicable to: ALL<br />

ENGAGEMENT CONDITIONS<br />

The SRS mode automatically engages when the thrust levers are set to the TOGA or FLX/MCT<br />

detent, or a derated level � , providing:<br />

‐ V2 has been inserted in the MCDU PERF TAKEOFF page. If V2 has not been inserted, V/S<br />

mode engages 5 s after lift-off on the current V/S value<br />

‐ The slats are extended<br />

‐ The aircraft has been on ground for at least 30 s.<br />

Applicable to: MSN 0014-0043<br />

DISENGAGEMENT CONDITIONS<br />

The SRS mode disengages:<br />

‐ Automatically, at the acceleration altitude (ACC ALT), or if ALT* or ALT CST* mode engages<br />

(above 400 ft RA)<br />

‐ If the flight crew engages another vertical mode.<br />

Note: In Engine Out conditions, the SRS mode does not automatically disengage at EO ACC<br />

ALT. Refer to DSC-22_20-60-40 General.<br />

RJA A330/A340 FLEET DSC-22_30-80-20 P 1/4<br />

FCOM A to B → 30 MAY 12

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