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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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07/01/21

Message Overview:

Message Name:

WEATHER RADAR INFORMATION NOT DISPLAYED ON DU2 OR DU5

Message Code: 344OBS024
Effectivity: All
System: Weather Radar System
System Description: 34-41-00
Schematic Diagram: 34-41-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-41-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

Display Unit 2 or Display Unit 5 do not receive Weather Radar Receiver/Transmitter Antenna (RTA) video input (Electronic Flight-Instrument System (EFIS) Picture bus) with a "WX" green displayed in the Multi-Function Display (MFD) status window.

Possible Causes:

  • Display Unit (DU) 2 (M8)
  • Display Unit (DU) 5 (M11)
  • Weather Radar Receiver/Transmitter and Antenna (RTA) (A125)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Electronic Flight-Display Units AMM 31-61-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Electronic Flight-Display Units AMM 31-61-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
General Visual Inspection of the Weather Radar
Receiver/Transmitter and Antenna		 AMM 34-41-00-210-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Weather Radar Receiver/Transmitter AMM 34-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Weather Radar Receiver/Transmitter AMM 34-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to System Diagnostics AMM 45-45-00-970-804 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Integrated Maintenance Test (IMT) Fault Code Look-Up AMM 45-45-00-970-826 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Ensure that "WX" green displayed in the MFD status window and that the MFD page "MAP" supporting weather radar information is selected.
    NOTE: The TEST mode can be selected to view weather video information on the DU. If only one DU is not showing information, focus the troubleshooting on that side.
    NOTE: Swapping DUs is a quick way to evaluate if a DU is at fault.
  2. On the CAIMS PMAT, get access to system diagnostics and perform IAC-EDS, IAC EDS/Core Test, WX-R/T P880 interface test following the set up instructions on the PMAT.
    NOTE: Run this test on all FWC, If not associated to a specific CAIMS message to a particular FWC.
  3. After each test is completed, look at the TEST RESULTS page and record the fault type 43XX and code XX.
  4. Perform IMT fault code look up procedure and follow the associated troubleshooting procedure.
  5. Do close out.

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