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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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07/18/19

Message Overview:

GND LIFT DUMP OFF
(Status)

DDG Reference: None
Pilot Action (QRH): None
System Description: 27-60-00
Schematic Diagram: 27-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-60-06 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

GND LIFT DUMP/OFF PBA is pressed; the message is accompanied by the illumination of the OFF legend on this PBA.

This troubleshooting applies when it is not under normal conditions.

Possible Causes:

  • GND LIFT DUMP/OFF PBA
  • Flight-Control Unit (FCU)s
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of Flight-Control Units AMM 27-61-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Flight-Control Units AMM 27-61-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of GND LIFT DUMPING and AUTO BRAKE Control Panel AMM 32-43-45-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of GND LIFT DUMPING and AUTO BRAKE Control Panel AMM 32-43-45-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Pushbutton/Toggle Switch AMM 20-11-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Push button/Toggle Switch AMM 20-11-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to CAIMS System Diagnostics AMM 45-45-00-970-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram 27-60-06 WM 27-60-06 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram 32-43-06 WM 32-43-06 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform the cockpit switch test on CAIMS

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

    NOTE: If the fault is only reported by one FCU, perform troubleshooting on the related side.

  2. Perform wiring check between GND LIFT DUMPING and AUTO BRAKE Control Panel (AP23P1 pins 7, 8 and 9 /AP23P2 pins 7, 8 and 9) and Ground.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Perform open/shorted to ground checks at GND LIFT DUMPING and AUTO BRAKE Control Panel (AP23) AP23J1 pins 5, 11 and 12.

    1. If checks are good, go to step 6.
    2. If any of the checks fails, continue with next step.

    GND Lift Dumping (GLD) Switch position AP23J1 pin 5 AP23J2 pin 5 AP23J1 pin 11 AP23J2 pin 11 AP23J1 pin 12 AP23J2 pin 12
    ARM GND (J1-8) GND (J2-8) GND (J1-7) GND (J2-7) GND (J1-9) GND (J2-9)
    AUTO Open Open GND (J1-7) GND (J2-7) GND (J1-9) GND (J2-9)
    OFF Open Open Open Open Open Open

  4. Perform wiring check of GND LIFT DUMPING and AUTO BRAKE Control Panel (AP23) internal wiring.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

    GND Lift Dumping (GLD) Switch position J1 pins 5 and 8 J2 pins 5 and 8 J1 pins 11 and 7 J2 pins 11 and 7 J1 pins 12 and 9 J2 pins 12 and 9
    ARM Closed Closed Closed Closed Closed Closed
    AUTO Open Open Closed Closed Closed Closed
    OFF Open Open Open Open Open Open

  5. Replace GND Lift Dumping (GLD) Switch.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  6. Perform wiring check between FCU 1/FCU 2 and GND LIFT DUMPING and AUTO BRAKE Control Panel.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  7. Swap FCUs.
  8. Do close out.

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