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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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CRC Montreal (YUL)
Quick Links

07/08/19

Message Overview:

SET LDG ELEV
(Advisory)

DDG Reference 21-30
Pilot Action (QRH) ADVISORY 2-5
System Description 21-31-00
Schematic Diagram 21-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram 21-31-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

  1. There is no landing information to the cabin pressure controller (CPC) from the flight management system (FMS), OR
  2. On the PRESSURIZATION control panel, the LDG ELEV is selected to MAN and no value is set.

Possible Causes:

  • LDG ELEV Toggle Switch (S3)
  • PRESSURIZATION Control Panel (AP9)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum/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 ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks for an open circuit between the pins of the connectors that follow or a short circuit to ground.

    AP9P1 (PRESSURIZATION PANEL) A21P1 (CABIN PRESSURE
    CONTROLLER No. 1)
    pin 35 pin 5
    AP9P1 (PRESSURIZATION PANEL) A22P1 (CABIN PRESSURE
    CONTROLLER No. 2)
    pin 25 pin 5

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

  2. Replace PRESSURIZATION Control Panel.
  3. Do close out.

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