background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy 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

03/17/21

Message Overview:

Message Name:

NO R-ADC-1 BUS INPUT

Message Code:

B3-006309

Associated CAS:

None

Reporting LRU: AHC 2
System Description: None
Schematic Diagram: None
Wiring Diagram: None

Message Description:

No R-ADC-1 data received at R-AHC while data is present at R-IOC.

Possible Causes:

  • Junction Box 4 (JB 4)
  • Right Attitude Heading Computer (AHC 2) (A12)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Junction Boxes AMM 24-63-01-000-802 [ CH 300 ]  [ CH 350 ]
Installation of the Junction Boxes AMM 24-63-01-400-802 [ CH 300 ]  [ CH 350 ]
Removal of the Air Data Computer AMM 34-13-01-000-801 [ CH 300 ]  [ CH 350 ]
Installation of the Air Data Computer AMM 34-13-01-400-801 [ CH 300 ]  [ CH 350 ]
Wiring - Maintenance Practices - ALL SPM 20-12-00-02 [ CH 300 ]  [ CH 350 ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ CH 300 ]  [ CH 350 ]
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02 [ CH 300 ]  [ CH 350 ]

Troubleshooting Recommendations:

  1. Reset ATT HDG 2 (CB2-C2) circuit breaker.

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

  2. Swap AHCs.

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

  3. Do wiring check of the ARINC 429 R-ADC-1 data bus between Right AHC connector A12P1, Junction Box #4, and Right ADC connector A2P1. Repair/replace as required.

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

  4. Do close out.

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