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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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04/13/21

Message Overview:

Message Name:

FUEL FLOW METER 1A

Message Code:

B3-302983

Associated CAS Message:

None

Reporting LRU: L ENG FFM
System Description: 73-30-00
Schematic Diagram: 73-21-00 Sh. 3
Wiring Diagram: None

Message Description:

Left engine fuel flow meter fault 1A.

[MCID 0115]
Fuel Flowmeter 1A.
An open type fault in the fuel flowmeter circuit was sensed. This circuit includes the fuel flowmeter, the ECU A, and the wires between them. The ECU A cannot support full system operation.

Possible Causes:

  • Wiring Harness (W6)
  • Full Authority Digital Engine Control Unit (FADEC) Electronic Control Unit A (ECU) (A41)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Component Location AMM 28-41-00-992-801
General Visual Inspection of the Engine Wiring Harness AMM 71-50-00-210-802
Removal of the FADEC Electrical Harness from the Left Engine AMM 71-50-05-000-802
Installation of the FADEC Electrical Harness on the Left Engine AMM 71-50-05-400-802
Removal of the Fuel Flow Meter AMM 73-30-02-000-801
Installation of the Fuel Flow Meter AMM 73-30-02-400-801
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 0115 fault only is present, troubleshoot using the Light Engine Maintenance Manual TASK 72-00-00-810-014.

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