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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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05/16/25

Message Overview:

Message Name:

ACPC LEFT MICROPROCESSOR CARD-A20

Message Code:

2451313ACP

Reporting LRU: AC Power Center (ACPC)
Associated CAS: ELEC SYS FAIL (Caution)
System Description: 24-50-00 - AC Electrical Load Distribution
Schematic Diagram: [ G5000 ]  [ Global Express ]  [ Global XRS ] SSM 24-51-00-101 - AC Load Distribution AC Power Center (ACPC) System - Electrical Schematic
Wiring Diagram: [ G5000 ]  [ Global Express ]  [ Global XRS ] WM 24-51-00-1_001 - Sheet 1 - Distribution (Left) - ALL
[ G5000 ]  [ Global Express ]  [ Global XRS ] WM 24-51-01-1_001 - Sheet 1 - Distribution (Left) - ALL

Message Description:

AC Power Center (ACPC) has detected a malfunction with the Microprocessor Card.

Possible Causes:

  • AC Power Center (ACPC) (A54)/Microprocessor Card
  • AC Power Center (ACPC) (A54)/Supervisor Card

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

Quick Links:

Grounding of the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-11-00-867-801
Removal of the Covers and Plugs [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-12-00-020-801
Installation of the Covers and Plugs [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM10-12-00-420-801
Standard Aircraft Configuration for Maintenance [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-801
Aircraft Walkaround (for Maintenance) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-802
Connect Electrical Power to the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-801
Remove the Electrical Power from the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-802
Electrical/Electronic Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-801
Electrostatic Discharge Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-802
Removal of the AC Power Center (ACPC) Fault-Tolerant Supervisor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-01-000-801
Installation of the AC Power Center (ACPC) Fault-Tolerant Supervisor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-01-400-801
Operational Test of the AC Power Center (ACPC) Fault-Tolerant Supervisor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-01-710-801
Removal of the AC Power Center (ACPC) Fault-Tolerant Microprocessor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-05-000-801
Installation of the AC Power Center (ACPC) Fault-Tolerant Microprocessor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-05-400-801
Operational Test of the AC Power Center (ACPC) Fault-Tolerant Microprocessor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-51-05-710-801
Access to Active Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-802
Access to Stored Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-803
Access to System Diagnostics [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-804
Flight Deck Effect to Fault Correlations [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-821
Wire Repair - Maintenance Practices - ALL [ G5000 ]  [ Global Express ]  [ Global XRS ] SPM20-12-10-02

Troubleshooting Recommendations:

  1. Interchange microprocessor cards.

    1. If system checks are good, replace defective microprocessor card and do close out.
    2. If fault remains, continue with next step.

  2. On EMS CDU 1, perform Virgin start Procedure on the ACPC assembly. ACPC component should be selected at step 4 from (virgin start procedure) to only perform the Virgin Start on this component.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Replace ACPC supervisor card.
  4. Do close out.

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