09/05/19
Message Overview:
Fault Message:
STAB SRC/WRG/WX RTA FAULT (27B)
Fault Code:
3440024WX
Associated CAS:
| Reporting LRU: | 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 ] 34-45-01 [ Global Express ] [ G5000 ] [ Global XRS ] 34-45-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
Amber FAIL legend and fault code 27 show in Multi-Function Display (MFD) status window.
Possible Causes:
- Weather Radar (WXR) Receiver/Transmitter (A125)
- Inertial Reference Units (IRU) 1 (A32)
- Inertial Reference Units (IRU) 2 (A33)
- 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.
Quick Links:
| 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 ] |
| Removal of the Inertial Reference Units (IRU) | AMM 34-45-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Inertial Reference Units (IRU) | AMM 34-45-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Perform a wiring check for open or short circuit to ground between WX RTA (A125P1), IRU 1 (A32BP1) and IRU 2 (A33BP1).
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Replace WXR R/T.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace the defective IRU.
- Do close out.