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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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Quick Links

06/11/24

Message Overview:

GEAR
(Warning)

DDG Reference: None
Pilot Action (QRH): GEAR 10-1
System Description: 32-61-00 - Position Indication System
Schematic Diagram: 32-61-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 32-61-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

Aircraft is in landing configuration (see below) and the gears are not down and locked.

OR

Gear Horn Muted

Landing Configuration:

  • Aircraft height is below 1000 feet and descent rate exceeds 400 feet/min

    • or

  • at low aircraft speeds, Flap is 30°

    • or

  • Both engines are idle (not mutable)

    • or

  • One engine is idle (mutable)

Possible Causes:

  • Landing gear is not fully extended and locked as necessary for landing configuration
  • Landing Gear Electronic Control Unit (LGECU) (A52)
  • Data Acquisition Unit (DAU) 1 (A17)
  • Data Acquisition Unit (DAU) 4 (A31)
  • Radio Altimeter Transceiver (RAD ALT) 1 (A67)
  • Radio Altimeter Transceiver (RAD ALT) 2 (A68)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

Quick Links:

Removal of the Flight Data Recorder AMM 31-31-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Flight Data Recorder AMM 31-31-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Landing-Gear Electronic Control-Unit (LG ECU) AMM 32-31-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Landing-Gear Electronic Control-Unit (LG ECU) AMM 32-31-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Stored Faults AMM 45-45-00-970-803 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Make sure there are no reported faults or anomalies with the Radio Altimeter (RAD ALT) system.

    1. If there are faults or anomalies with the RAD ALT, troubleshoot them first.
    2. If there are no faults or anomalies, continue with next step.

  2. Remove and re-seat the LGECU. Is the fault still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  3. Perform wiring check between the LGECU and the DAUs.

    1. If wiring defects are found, repair defective wiring as required and do close out.
    2. If NO, wiring defects are found, continue with next step.

  4. Swap DAU 1 with DAU 3. Is the fault still present?

    1. If YES, continue with next step.
    2. If NO, replace defective DAU.

  5. Swap DAU 4 with DAU 2. Is the fault still present?

    1. If YES, continue with next step.
    2. If NO, replace defective DAU.

  6. Replace the LGECU.
  7. Do close out.

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