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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

08/26/19

Message Overview:

Fault Message:

MADC2/WRG/HUDC MON FAULT

Fault Code:

343000CHUD

Associated CAS:

None

Reporting LRU: Head-Up-Display (HUD) System
System Description: 34-32-00
Schematic Diagram: 34-32-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-11-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]
34-32-04 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Head-Up-Display (HUD) System does not receive data from the Integrated Avionics Computer Micro Air Data Computer (MADC).

Possible Causes:

  • Head-Up Flight Display Computer (HFDC) (A250)
  • Micro Air Data Computer (MADC) 2 (A28)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

If more fault reports are sent by a different system about the micro air-data computer, do the fault isolation of the MADC.

Quick Links:

Removal of the Micro Air-Data Computers AMM 34-11-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Micro Air-Data Computers AMM 34-11-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Head-Up-Display (HUD)
Computer		 AMM 34-32-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Head-Up-Display (HUD)
Computer		 AMM 34-32-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Swap MADC 2 with MADC 1.

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

  2. Perform a wiring check between MADC 2, JB6 and HUDC as follows:
    NOTE: When short circuit is detected, remove all interface components and reinstall one at a time to isolate short.

    From To Result
    A28P1-68 A250EP1-E1
    A28P1-69 A250EP1-E2
    A28P1-SH A250EP1-SH
    GND A250EP1-D2

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  3. Replace HUDC.
  4. Do close out.

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