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(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.

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03/15/21

Message Overview:

Message Name:

LNGDRCL SC FAIL

Message Code:

B3-007588

Associated CAS:

PROX SYS FAULT
(Advisory)

Reporting LRU: PSEU LRU
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 32-61-05
32-61-09
32-61-12

Message Description:

Left Nose Gear Door Closed Sensor PX34 signal conditioning failed.

Possible Causes:

  • Proximity Sensor Electronic Unit (PSEU) (A9)
  • Left Nose Landing-Gear Door Closed Proximity Sensor (PX34)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Proximity Sensors AMM 32-61-00-710-801
Functional Test of the Proximity Sensors AMM 32-61-00-720-801
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
Removal of the Proximity Sensor Electronic Unit (PSEU) AMM 32-61-09-000-801
Installation of the Proximity Sensor Electronic Unit (PSEU) AMM 32-61-09-400-801
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:

Operational Test of the Proximity Sensors AMM 32-61-00-710-801
Functional Test of the Proximity Sensors AMM 32-61-00-720-801
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
Removal of the Proximity Sensor Electronic Unit (PSEU) AMM 32-61-09-000-801
Installation of the Proximity Sensor Electronic Unit (PSEU) AMM 32-61-09-400-801
Functional Test of the Proximity Sensor Electronic Unit (PSEU) AMM 32-61-09-720-801
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
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