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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 />
AUTOTHRUST<br />
Current Wind in Approach IAS Target<br />
(e) 090/36 Max [VAPP, (130+12)] = 142 kt<br />
A/THR MODE REVERSION<br />
CONDITIONS EVENT CONSEQUENCES<br />
‐ A/THR active in THR mode<br />
Aircraft speed = VLS (VMAX)<br />
‐ A/THR reverts to SPD mode<br />
‐ AP OFF<br />
‐ FD bars are removed<br />
‐ FD engaged<br />
‐ DES or OP DES engaged (CLB, or OP<br />
CLB)<br />
For more details, Refer to DSC-22_30-75 General.<br />
ALPHA FLOOR<br />
ALPHA FLOOR protection is triggered when the FMGECs receive a signal elaborated by the<br />
PRIMs. This signal is sent when the aircraft’s angle of attack is above a pre-determined threshold<br />
function of the aircraft’s configuration. A/THR is automatically activated and commands TOGA<br />
thrust, regardless of the thrust levers positions. This protection is available from liftoff to 100 ft RA<br />
in approach.<br />
The following indications are then provided:<br />
‐ A-FLOOR on the FMA and on the EWD, as long as α floor conditions are met<br />
‐ TOGA LK on the FMA, when the aircraft leaves the α floor conditions.<br />
TOGA thrust is then frozen.<br />
A-FLOOR and TOGA LK are displayed in green, and outlined with a flashing amber box.<br />
In order to cancel ALPHA FLOOR or TOGA LK thrust, disconnect the A/THR.<br />
RJA A330/A340 FLEET DSC-22_30-90 P 20/22<br />
FCOM ← I to J → 03 MAY 11
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