background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

07/23/19

Message Overview:

Fault Message:

YDA2 HEATER / WRG

Fault Code:

3031080HBM

Associated CAS:

YD HEAT 2 FAIL
(Advisory)

Reporting LRU: Heater/Brake Temperature Monitor Unit (HBMU) 2
System Description: 30-31-00
Schematic Diagram: 30-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 30-31-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The Right Yaw Damper Actuator Heater circuit has been detected opened by Heater/Brake Temperature Monitor Unit (HBMU) 2.

Possible Causes:

  • Rudder Linear Actuator 2 (B18)
  • Yaw Damper Actuator 2 Heater
  • Heater/Brake-Temperature Monitor Unit (HMBU) 2 (A93)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Rudder Linear Actuators AMM 22-13-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Rudder Linear Actuators AMM 22-13-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Heater/Brake-Temperature Monitoring Unit (HBMU) AMM 30-31-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Heater/Brake-Temperature Monitoring Unit (HBMU) AMM 30-31-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform wiring checks between HBMU 2 and yaw damper actuator 2 heater.

    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. Measure the resistance of yaw damper actuator 2 heater. Yaw damper actuator 2 heater= 37.8 ohms ±10%

    1. If resistance within range, go to step 4.
    2. If resistance out of range, continue with next step.

  3. Replace yaw damper actuator.

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

  4. Replace HBMU 2
  5. Do close out.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.