AIRCRAFT SYSTEMS - e-Crew

More documents

Recommendations

Info

A330/A340 FLIGHT CREW OPERATING MANUAL Applicable to: MSN 0970-1002 AIRCRAFT SYSTEMS AUTO FLIGHT - FLIGHT GUIDANCE AP/FD VERTICAL MODES - DESCENT MODE VERTICAL DEVIATION (VDEV) MANAGEMENT CHARACTERISTIC In some cases, when the aircraft is above or below the vertical profile, the ND may not display any intercept point (pseudo waypoint), even if the VDEV appears on both the MCDUs and PFDs. In addition, the FMS guidance may not immediately attempt to decrease this VDEV (contrary to flight crew expectations). This is due to the fact that the FMS guides the aircraft along the extension of the subsequent segment (N+1), when all of the following conditions are met: ‐ The aircraft is above or below the descent profile ‐ The DES mode is active, or the FINAL APP mode is armed ‐ The aircraft intercepts the extension of the subsequent segment (N+1) of the vertical profile, before the aircraft reaches the initially expected segment (N), as illustrated below. The VDEV will gradually decrease until the aircraft reaches the beginning of the subsequent segment. Applicable to: ALL LEVELING OFF AT A CONSTRAINT If the aircraft levels off at an ALT CSTR, the DES mode arms and remains armed until the aircraft passes the constraint, then reengages (if the FCU altitude is set below the altitude of the constraint). If the FCU selected altitude is that of a constraint, the flight crew may continue the descent below that altitude by turning the ALT knob and pushing it in. This arms the DES mode, which reengages when the aircraft passes the constraint waypoint. RJA A330/A340 FLEET DSC-22_30-70-50 P 14/16 FCOM ← I → 25 NOV 11
A330/A340 FLIGHT CREW OPERATING MANUAL Applicable to: ALL GUIDANCE IN A HOLD AIRCRAFT SYSTEMS AUTO FLIGHT - FLIGHT GUIDANCE AP/FD VERTICAL MODES - DESCENT MODE Just before the aircraft enters a holding pattern, the speed target becomes the holding speed. In the holding pattern, the DES mode commands the V/S at -1 000 ft while A/THR maintains the holding speed. The aircraft will level off at the next altitude constraint if it is reached during the hold. The vertical deviation (VDEV) is based on the altitude at which the aircraft is supposed to cross the exit fix in order to be properly positioned on the descent profile. Until the flight crew exits the hold, the FMGES in DES mode will maintain V/S = -1 000 ft/min considering downpath vertical constraint. This means that the aircraft will not descent below the next altitude constraint. If the aircraft reaches the next altitude constraint it will level off and ALT CST mode will engage. Applicable to: ALL TOO STEEP PATH A descent segment is called “too steep path” when the FMGES predicts that the descent segment between two constraint waypoints is impossible to fly at the planned descent speed with half speedbrake extended. When this occurs, the MCDU displays no predictions between the upper and the lower points of the too steep path. Relevant message “TOO STEEP PATH” is displayed on MCDU. RJA A330/A340 FLEET DSC-22_30-70-50 P 15/16 FCOM ← I → 25 NOV 11
Page 1 and 2:
AIRCRAFT SYSTEMS AUTO FLIGHT - FLIG
Page 3 and 4:
A330/A340 FLIGHT CREW OPERATING MAN
Page 5 and 6:
Page 7 and 8: A330/A340 FLIGHT CREW OPERATING MAN
Page 57: A330/A340 FLIGHT CREW OPERATING MAN
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
show all

AIRCRAFT SYSTEMS - e-Crew

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?