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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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12/11/19

Message Overview:

GND LIFT DUMP
(Caution)

DDG Reference: None
Pilot Action (QRH): ABNORM 8-16
System Description: 27-60-00
Schematic Diagram: 27-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 27-60-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

One of the conditions that follow occur:

  • The system is energized and the self-tests detect a valve blocked in the extended position.
  • During take-off or landing: GLD is not armed (loss or absence of automatic arm, or OFF switch) with an effect on a minimum of two pairs of spoilers (GS or MFS).
  • There is no GLD or the extension is slow for a minimum of two pairs of spoilers (GS or MFS). This condition is related to the failure of one position of a ground spoiler.
  • Two pairs of ground spoilers failed in retracted position. If the related hydraulic pressure is low, the GND LIFT DUMP (caution) does not show.
  • One pair of ground spoilers failed in the retracted position and one pair of multi-function spoilers failed.

Possible Causes:

  • Flight-Control Units
  • Brake Control Unit (BCU)
  • GND LIFT DUMP Switch
  • GS Selector Valve
  • Multi-Function Spoilers (MFS) Proximity Switch Sensor (PSS)
  • GS PSS
  • GS PCU
  • MFS actuator
  • Landing Gear Electronic Control Unit (LGECU)
  • Radio Altimeter Receiver Transducer
  • Throttle Quadrant
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter:


NOTE: To support a NFF technical investigation please fill out this Questionaire and send it to your FSR if you are replacing an Flight Control Unit (FCU).

NOTE: This fault may sometime be cleared by performing the flight control system reset procedure. If the message comes back more then once within 10 flight legs, troubleshooting is required

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 Brake Control Unit AMM 32-43-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Brake Control Unit AMM 32-43-01-400-801 [ 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 Pushbutton/Toggle Switch AMM 20-11-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Ground-Spoiler Selector Valves AMM 27-63-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Ground-Spoiler Selector Valves AMM 27-63-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Spoiler Proximity Switch Sensors AMM 27-61-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Spoiler Proximity Switch Sensors AMM 27-61-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Radio Altimeter Transceivers AMM 34-44-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Radio Altimeter Transceivers AMM 34-44-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Throttle Quadrant AMM 76-10-01000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Throttle Quadrant AMM 76-10-01400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Select related CAIMS message below:

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