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Select color for CAS message that you wish to troubleshoot

(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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

Message Overview:

DITCHING ON
(Status)

DDG Reference: 21-62
Pilot Action (QRH): STATUS-1
System Description: 21-31-00
Schematic Diagram: 21-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-31-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

CAS message displayed when DITCHING switch is not set to ON.

Possible Causes:

  • DITCH Pushbutton
  • PRESSURIZATION Control Panel (AP9)
  • Cabin Pressure Controller (CPC) 1 (A21)
  • CPC 2 (A22)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Cabin Pressure Controllers AMM 21-31-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Cabin Pressure Controllers AMM 21-31-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the PRESSURIZATION Control Panel AMM 21-31-13-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the PRESSURIZATION Control Panel AMM 21-31-13-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Switches in the Flight Compartment SPM 20-11-01-000-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Switches in the Flight Compartment SPM 20-11-01-400-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. On the PRESSURIZATION control panel, make sure that DITCH pushbutton is not set to the ON position.
  2. Swap PBAs.

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

  3. Perform wiring checks between CPCs and PRESSURIZATION Control Panel or a short circuit to ground.

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

  4. Replace PRESSURIZATION Control Panel.

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

  5. Replace CPC1.

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

  6. Replace CPC2.
  7. Do close out.

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