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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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Quick Links

04/19/21

Message Overview:

Message Name:

ENGINE VIB SENSOR 1B

Message Code:

B3-305056

Associated CAS:

None

Reporting LRU: L ENG VIB SNSR
System Description: 77-10-00
Schematic Diagram: 77-31-00
Wiring Diagram: None

Message Description:

Left engine vibration sensor fault 1B.

[MCID 0811]
Vibration Signal Sensor 1B.
Detection of a fault in the engine vibration sensor harness between the engine vibration sensor and the ECU B. The ECU B cannot support full system operation.

Possible Causes:

  • Wiring Harness (W6)
  • Full Authority Digital Engine Control (FADEC) Electronic Control Unit B (ECU) (A43)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Detailed Inspection of the Engine Operated at Vibration Levels More than the Allowed Limits AMM 05-52-17-220-801
Removal of the Engine Electronic Control Unit (ECU) AMM 76-10-05-000-801
Installation of the Engine Electronic Control Unit (ECU) AMM 76-10-05-400-801
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

Troubleshooting Recommendations:

  1. MCID 0811 fault present, troubleshoot using the following steps for aircraft and engine fault isolation with reference to the Light Engine Maintenance Manual TASK 72-00-00-810-118.

engVibration BlockVibration Sensor

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