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

03/15/21

Message Overview:

Message Name:

NOSE GEAR TIME EXCEEDED

Message Code:

B3-007646

Associated CAS:

GEAR DISAGREE
(Caution)

Reporting LRU: PSEU LRU
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 32-61-05

Message Description:

Proximity Sensor Electronic Unit detects that the left gear was in transit between Uplock and Downlock for more than 28 seconds. Verify rigging/status.

Possible Causes:

  • Nose Landing-Gear Uplock Proximity-Sensor (PX06)
  • Nose Landing-Gear Downlock 1 Proximity-Sensor (PX10)
  • Nose Landing-Gear Downlock 2 Proximity-Sensor (PX40)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Adjustment of the Proximity Sensors AMM 32-61-00-820-801
Removal of the Nose Landing-Gear (NLG) Proximity-Sensors AMM 32-61-05-000-801
Installation of the Nose Landing-Gear (NLG) Proximity Sensors AMM 32-61-05-400-801
Functional Test of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-720-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Do the rigging with the adjustment of the sensor PX10.

    1. If the rigging is good, go to step 4.
    2. If fault remains, continue with next step.

  2. Replace the sensor PX10.
  3. Go to step 1.
  4. Do the rigging with the adjustment of the sensor PX40.

    1. If the rigging is good, go to step 7.
    2. If fault remains, continue with next step.

  5. Replace the sensor PX40.
  6. Go to step 4.
  7. Do the rigging with the adjustment of the sensor PX06.

    1. If the rigging is good, do close out.
    2. If fault remains, continue with next step.

  8. Replace the sensor PX06.
  9. Go to step 7.
  10. Do close out.

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