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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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03/03/21

Message Overview:

Message Name:

HYDRAULIC SOLENOID 1A

Message Code:

B3-303028

Associated CAS:

None

Reporting LRU: L ENG HYD BYP
System Description: 29-12-00
Schematic Diagram: 76-11-00
Wiring Diagram: None

Message Description:

Left engine hydraulic bypass solenoid fault 1A. Suspect operation within the HMU was sensed. MCID 1606

Possible Causes:

  • Left Engine Hydraulic Bypass Solenoid
  • Hydraulic Bypass Valve (V11)
  • Full Authority Digital Engine Control (FADEC) Electronic Control Unit A (ECU) (A41)
  • W6 Wiring Harness
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

None

Troubleshooting Recommendations:

  1. MCID 1606 fault present, troubleshoot using the following steps for aircraft and engine fault isolation with reference to the Light Engine Maintenance Manual TASK 72-00-00-810-338.

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