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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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For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

08/24/19

Message Overview:

Fault Message:

ISU/WRG/HFDC FAULT

Fault Code:

3430001EVS

Associated CAS:

EVS FAIL
(Caution)

Reporting LRU: Head-Up Display (HUD) System
System Description: 34-32-00
Schematic Diagram: 34-32-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-32-05 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Head-Up display (HUD) system does not receive video signal from the Infrared Sensor Unit (ISU) or the HUD is invalid.

Possible Causes:

  • Head-Up Flight Display Computer (HFDC) (A250)
  • Infrared Sensor Unit (ISU) (A318)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

NOTE: HFDC is the official vendor assigned name-Bombardier uses HUDC.

Quick Links:

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 ]
Removal of the Enhanced Vision System (EVS) - InfraRed
Sensor Unit (ISU)		 AMM 34-33-03-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Enhanced Vision System (EVS) - InfraRed
Sensor Unit (ISU)		 AMM 34-33-03-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform a wiring check for open or short circuit to ground between HUDC and ISU as follows:

    From To Result
    A318P1-T A250FP1-12

    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.

  2. Replace HUDC.

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

  3. Replace ISU.
  4. Do close out.

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