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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 AMBER FAIL LEGEND AND FAULT CODE DISPLAY IN MFD STATUS WINDOW

Message Code: 344OBS023
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:

Weather Radar Receiver/Transmitter Antenna (RTA) has detected an internal and external failure.

Possible Causes:

  • SCAN Switch
  • XMIT Switch
  • Weather Radar Receiver/Transmitter and Antenna (RTA) (A125)
  • Weather Radar Control Panel 1 (A122)
  • Weather Radar Control Panel 2 (A92)

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-34-0166 - Update - Weather Radar Increased Ground Clutter During Flight
  • AW700T-0116 - Weather Radar Forced Standby Over-Ride Operation

Forum Articles/Infoservice/Newsletter:

  • TNL A23-3944-005 - Primus 880, 660, 440 Weather Radar Fault Code 11, Magnetron Fault

The FAIL legend and fault codes show on the Multi-Function Display (MFD) status window only when the WXR system is in TST (Test) mode and an active fault has occurred.

Quick Links:

Operational Test of the Weather Radar System AMM 34-41-00-710-801 [ 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 Traffic/Collision Avoidance
System (TCAS) Receiver/Transmitter		 AMM 34-43-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Traffic/Collision Avoidance
System (TCAS) Receiver/Transmitter		 AMM 34-43-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Opening of the Nose Radome AMM 53-60-01-010-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Closing of the Nose Radome AMM 53-60-01-410-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Align INUs in ATTITUDE mode.
  2. Check on MFD to find WXR fault code during TST (weather test mode).

    Name of Display Unit WX Fault Code Correlated CAIMS Message
    MFD 01 INTERNAL CRC FAULT (01)
    MFD 02 INTERNAL IOP FAULT (02)
    MFD 03 INTERNAL EEPROM FAULT (03)
    MFD 04 INTERNAL RAM FAULT (04)
    MFD 05 INTERNAL FPGA FAULT (05)
    MFD 06 WX STC DAC FAULT (06)
    MFD 07 WX HVPS FAULT (07)
    MFD 10 INTERNAL DSP FAULT (10)
    MFD 11 WX MAGNETRON FAULT (11A)
    MFD 11 WX HVPS FAULT (11B)
    MFD 13 RADOME/ANTENNAELEV FAULT (13)
    MFD 14 RADOME/ANTENNA AZFAULT (14)
    MFD 15 RTA OVER TEMP FAULT (15)
    MFD 16 WX XMIT POWER FAULT (16)
    MFD 20 WX CONTROLLER/RTA FAULT (20)
    MFD 21 WX AGC FAULT (21)
    MFD 22 WX RECEIVER TEST FAULT (22)
    MFD 23 WX AFC FAULT (23)
    MFD 24 WX AFC FAULT (24)
    MFD 27 IRS/WRG/WX RTA FAULT (27A)
    MFD 30 DADC/WRG/WX RTA FAULT (30A)
    MFD 30 IRS/WRG/WX RTA FAULT (30B)
    MFD 33 DADC/WRG/WX RTA FAULT (33A)
    MFD 33 IRS/WRG/WX RTA FAULT (33B)
    MFD 34 WX RTA SCAN SWITCH OFF (34)
    MFD 35 WX RTA TRANSMIT SWITCH OFF (35)
    MFD 36 WX IOP FAULT (36)
    MFD 36 INVALID STRAP/WX RTA FAULT (36A)
    MFD 37 DAU1/WRG/FWC FAULT (37)
    MFD FAIL INTERNAL POWERSUPPLY FAULT

    1. If the fault codes 01, 02, 03, 04, 05, 06, 07, 10, 11, 15, 16, 21, 22, 23, 24, 36, FAIL are displayed on MFD, replace the WXR Receiver/Transceiver and check for the other codes.
      NOTE: Replace RTA only if it is post modification "P". See TNL A23-3933-005.
    2. If the other fault codes are displayed,

      1. For fault code 13, perform the visual inspection of WXR R/T Antenna.
      2. For the fault code 14, perform the visual inspection of WXR R/T Antenna.
      3. For the fault code 20, perform the troubleshooting of 3440014WX.
      4. For the fault code 27, perform the troubleshooting of 3440018WX.
      5. For the fault code 30, perform the troubleshooting of 3440019WX.
      6. For the fault code 30, perform the troubleshooting of 3440025WX.
      7. For the fault code 33, perform the troubleshooting of 3440020WX.
      8. For the fault code 33, perform the troubleshooting of 3440026WX.
      9. For the fault code 34, perform the troubleshooting of 3440021WX.
      10. For the fault code 35, perform the troubleshooting of 3440022WX.
      11. For the fault code 36, perform the troubleshooting of 3440023WX.
      12. For the fault code 37, perform the troubleshooting of 3440029WX.
        NOTE: If there are more than one active fault in the weather system, each fault will come up momentarily until all of them are shown. There is a delay of up to 4 minutes for some faults to display. Therefore allow system in test mode for significant time to display all active faults.

    3. If there is no active fault, use CAIMS PMAT to monitor Stored Fault on Ground Fault for weather radar via System Diagnostic and troubleshoot RTA as required.
      NOTE: Refer to AW 700-45-0002 for Stored Fault Capabilities.

  3. Do close out.

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