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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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01/28/21

Message Overview:

L ENGINE EXCEEDANCE
(Warning)

DDG Reference: None
Pilot Action (QRH): EMER-11-1
System Description: 76-11-00
77-10-00
Schematic Diagram: 77-31-00
Wiring Diagram: 77-40-01
77-40-05

Message Description:

A red 'L ENGINE EXCEEDANCE' warning CAS message indicates the left-side engine has exceeded a speed or temperature limit.

  • The ECU ECTM functions provide current fault information to the Maintenance Diagnostic Computer (MDC) the use of the Honeywell E-Engine web site can provide additional troubleshooting information.
  • The ECU ECTM sends fault messages to the MDC only on faults that have been confirmed. The MDC displays the fault message on the Current Faults page. The MDC also logs the engine exceedance history under the following page.

Possible Causes:

  • 1st Stage Unison Ring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

None

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 fault. Going into advanced diagnostics will provide an equation id for the fault identified.
    3. Select the MDC fault or equation from the drop down below to provide additional information to assist in troubleshooting.

      45_engine_exceedance_history45_current_faults

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