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

03/16/21

Message Overview:

Message Name:

RIGHT PILOT BRAKE LVDT

Message Code:

B3-007842

Associated CAS:

PLT BRAKE FAULT
(Caution)

Reporting LRU: R PLT BK PEDAL X
System Description: 32-43-00
Schematic Diagram: 32-43-00
Wiring Diagram: 32-43-05

Message Description:

There is a discrepancy between the Brake Control Unit inboard and outboard card sensing of the right pilot's brake pedal position sensor (LVDT) position.

Possible Causes:

  • Brake Pedal Linear Variable Differential Transducer (LVDT) (MT95)
  • Brake Control Unit (BCU) (A67)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Brake Control Unit AMM 32-43-01-000-801
Installation of the Brake Control Unit AMM 32-43-01-400-801
Removal of the Brake-Pedal Position Transducer AMM 32-43-05-000-801
Installation of the Brake-Pedal Position Transducer AMM 32-43-05-400-801
Operational Test of the LVDT Loop Back AMM 32-43-05-710-801
Data Download from the Maintenance Diagnostic Computer (MDC) AMM 45-45-01-970-802
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Reset RCBP-C15 (OUTBD BRAKES) and LCBP-C15 (INBD BRAKES).
  2. Access the MDC 'LRU TEST' page.
  3. Carry out the inboard BCU 'LVDT LOOP BACK TEST'.

    1. If Loop Back test fails, replace BCU.
    2. If Loop Back Test passes and fault still shows, go to next step.

  4. Carry out the outboard BCU 'LVDT LOOP BACK TEST'.

    1. If Loop Back test fails, replace BCU.
    2. If Loop Back Test passes and fault still shows, replace the right pilot brake pedal LVDT.

  5. Do close out.

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