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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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09/05/19

Message Overview:

Fault Message:

DADC/WRG/WX RTA FAULT (30A)

Fault Code:

3440019WX

Associated CAS:

None

Reporting LRU: Weather Radar System
System Description: 34-41-00
Schematic Diagram: 34-41-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-11-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]
34-41-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Airspeed is not available from Air Data Computer (ADC) or a problem is detected with the Turbulence Detection Hardware. Amber FAIL legend and fault code 30 show in Multi-Function Display (MFD) status window. Crew may notice Turbulence mode is inaccurate. Other modes are not affected.

Possible Causes:

  • Weather Radar (WXR) Receiver/Transmitter (A125)
  • Micro Air Data Computer (MADC) 1 (A27)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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

NOTE: 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.

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 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 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Make sure ADC is powered during test and show valid data on PDF.
    NOTE: ADC may generate no computed data to RTA, before airspeed reaches between 60 to 100 knots, causing Fault Code 30 A to show. RTA modification "N" and Sub will no longer cause this nuisance.
  2. Perform a wiring check for open or short circuit to ground between WX RTA (A125P1), and MADC 1 (A27).

    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. Swap MADC 1 with MADC 2.

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

  4. Replace WXR R/T.
  5. Do close out.

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