AIRCRAFT SYSTEMS - e-Crew

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A330/A340 FLIGHT CREW OPERATING MANUAL AIRCRAFT SYSTEMS AUTO FLIGHT - FLIGHT GUIDANCE AP/FD COMMON MODES - GO AROUND (GA) Note: In Engine Out conditions, the SRS mode does not automatically disengage at EO ACC ALT. (Refer to DSC-22_20-60-40 General). GA TRK disengages when the flight crew engages another lateral mode above 100 ft RA. In dual AP configuration, disengagement of the go-around mode, on either axis, causes AP2 to disconnect. Applicable to: ALL GUIDANCE The SRS law maintains the current speed at Go-around engagement, or VAPP, whichever is higher. Nevertheless, the SRS speed is limited to VLS+25 kt in normal engine configuration and VLS+15 kt in engine out. When the SRS mode disengages, the target speed becomes Green Dot speed. GA TRK mode guides the aircraft along the current track at Go-around initiation. RJA A330/A340 FLEET DSC-22_30-80-40 P 2/2 FCOM ← C to D 03 MAY 11
A330/A340 FLIGHT CREW OPERATING MANUAL Applicable to: MSN 0014-0043 AIRCRAFT SYSTEMS AUTO FLIGHT - FLIGHT GUIDANCE GENERAL AUTOTHRUST The autothrust (A/THR) is a function of the FMGES, it includes two independent A/THR commands, one per FMGEC. Each one is able to control the thrust of the four engines simultaneously through four Engine Interface Units and four Engine Control Units. Only one FMGEC controls the active A/THR, it is called the master FMGEC. Thrust is controlled: ‐ Automatically when the A/THR is active ‐ Manually by the flight crew. The autothrust is active when the A/THR pb of the FCU is lighted green and A/THR is displayed white in the FMA 5th column. The position of the thrust levers determines whether A/THR is armed, active, or disconnected. The autothrust system, when active: ‐ Maintains a specific thrust in THRUST mode ‐ Controls the aircraft speed or Mach in SPEED/MACH mode ‐ Uses ALPHA FLOOR mode to set maximum thrust when the aircraft angle of attack exceeds a specific threshold. The autothrust system can operate independently or with the AP/FD: ‐ When performing alone, A/THR always controls the speed ‐ If the autothrust system is working with the AP/FD, the A/THR mode and AP/FD pitch modes are linked together. (Refer to DSC-22_30-10 Interaction between AP/FD and A/THR Modes). When autothrust is active, the FMGES commands the thrust according to the vertical mode logic, but uses a thrust not greater than the thrust commanded by the position of the thrust lever. For example, when the thrust levers are set at the CL (climb) detent, A/THR can command thrust between idle and max climb. The autothrust system, when armed, automatically activates if the thrust levers are moved into the active range sector. Outside of this range, thrust levers control thrust directly. MASTER A/THR The thrust being controlled by one A/THR only, when one AP is engaged, priority is given to the associated autothrust. When both APs are engaged or no AP/FD engaged, A/THR1 has the priority. RJA A330/A340 FLEET DSC-22_30-90 P 1/22 FCOM A → 03 MAY 11
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