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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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03/29/21

Message Overview:

LATERAL MODE OFF
(Caution)

DDG Reference: None
Pilot Action (QRH): ABNORM 3-4
System Description: 22-11-00
Schematic Diagram: 22-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 22-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

A non-ROL mode has transitioned to ROL mode. This can be caused by the pilots selecting the basic ROL mode, selection of a different NAV source that causes the mode drop or the loss of valid data from the selected NAV source.

Possible Causes:

  • Pilot action
  • Invalid NAV source data
  • Integrated Avionics Computer (IAC) 1 (A11)
  • Integrated Avionics Computer (IAC) 2 (A10)
  • Flight Guidance Control Panel (A79)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Flight Director System AMM 22-11-00-710-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Guidance Control Panel AMM 22-11-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Guidance Control Panel AMM 22-11-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Integrated Avionics Computers (IAC) AMM 31-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Integrated Avionics Computers (IAC) AMM 31-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Access to Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. On the guidance control panel, select Flight Director (FD) mode as required. Is the CAS message still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  2. Select a valid NAV source for the mode. Is the CAS message still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  3. Access CAIMS active Faults. Are there any Autoflight or Flight Director related faults?

    1. If YES, troubleshoot them first.
    2. If NO, continue with next step.

  4. Couple the Flight Director to the opposite side. Is the CAS message still present?

    1. If YES, go to step 6.
    2. If NO, continue with next step.

  5. Interchange the suspected IAC (1 or 2) with IAC 3. Is the CAS message still present?

    1. If YES continue with next step.
    2. If NO, replace defective IAC.

  6. Replace the Flight Guidance Control Panel.
  7. Do close out.

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