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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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02/19/24

Message Overview:

L ENG A/ICE FAIL ON (Advisory)

DDG Reference: 30-10-06
Pilot Action (QRH): ICE 12-15
System Description: 30-21-00 - Engine Nacelle Anti-Ice System
Schematic Diagram: SSM 75-10-00-101 - Engine Anti-Icing
Wiring Diagram: WM 75-10-01-1_001 - Sheet 1 - Engine Nacelle Anti-Ice (LHS) - ALL

Message Description:

The cyan 'L ENG A/ICE FAIL ON' advisory CAS Message indicates the respective Nacelle Anti-Ice has failed on.

  • The Engine Electronic Control Unit (ECU) has determined that system command compared to system pressure indication for the respective Nacelle is showing pressure in an off condition and has posted the message.
  • If the T2 probe Heater has failed on, an amber 'T2' icon will be displayed on the anti-ice synoptic if Engine Anti-Ice bleed air has failed on, a green flow line will be displayed down stream of the failed Anti-Ice Valve on the synoptic.

Possible Causes:

  • Left Full Authority Digital Engine Control Channel A (L FADEC A) System (A41)
  • Left Full Authority Digital Engine Control Channel B (L FADEC B) System (A43)
  • Left Nacelle Anti-Ice Solenoid (V01)
  • T2 Probe Heater

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Anti-Ice System - Component Location AMM 30-11-00-992-801
Removal of the Anti-Ice Control Panel AMM 30-11-09-000-801
Installation of the Anti-Ice Control Panel AMM 30-11-09-400-801
Engine Nacelle Anti-Ice - Component Location AMM 30-21-00-992-801
Operational Test of the Nacelle Anti-Ice System AMM 30-21-00-710-801
Leak Test of the Nacelle Anti-Ice System AMM 30-21-00-790-801
Removal of the Cowl Anti-Ice Valve AMM 30-21-01-000-801
Installation of the Cowl Anti-Ice Valve AMM 30-21-01-400-801
Removal of the Anti-Ice Dual Pressure Switch AMM 30-21-03-000-801
Installation of the Anti-Ice Dual Pressure Switch AMM 30-21-03-400-801
Removal of the Anti-Ice Tubes AMM 30-21-05-000-801
Installation of the Anti-Ice Tubes AMM 30-21-05-400-801
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. Interrogate the MDC as follows:

    1. On the cursor control panel, ensure the toggle switch is to the right and select Anti-Ice, ECS and Fuel buttons simultaneously. The MDC main menu should now be displayed on Display Unit 3.
    2. Using the joystick, select Current Faults (if the fault is active) or Aircraft History to research stored faults. From Aircraft History you can then select Fault Message History and locate the air condition fault logged.
    3. Select the MDC fault from the drop down below to provide additional information to assist in troubleshooting:

  2. Do close out.

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