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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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06/22/21

Message Overview:

Message Name:

SPDA INOP SYSTEM

Message Code: 246OBS003
Effectivity: All
System: DC Electrical Load Distribution
System Description: 24-60-00
Schematic Diagram: 24-62-05 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-62-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-62-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-62-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]
24-62-04 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

One or more System(s) powered by Secondary Power Distribution Assembly (SPDA) is INOP.

Possible Causes:

  • Secondary Power Distribution Assembly (SPDA) 1 (A13)
  • Secondary Power Distribution Assembly (SPDA) 2 (A14)
  • Secondary Power Distribution Assembly (SPDA) 3 (A15)
  • Secondary Power Distribution Assembly (SPDA) 4 (A16)
  • Electrical Management System Control-and-Display Unit (EMS CDU) 1 (A94)
  • Electrical Management System Control-and-Display Unit (EMS CDU) 2 (A91)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

CAUTION: IF A CIRCUIT BREAKER OPENS, DO NOT TRY TO CLOSE IT BEFORE YOU CORRECT THE PROBLEM THAT CAUSED IT TO OPEN. YOU CAN CAUSE DAMAGE TO THE AIRCRAFT WIRING AND EQUIPMENT.

Quick Links:

Removal of the Secondary-Power Distribution
Assemblies		 AMM 24-62-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Secondary-Power Distribution
Assemblies		 AMM 24-62-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. On the EMS CDU, push on the “STAT” button. Inspect the Status page. Check if any virtual CB(s) is (are) tripped.

    1. If NO, go to step 3.
    2. If YES, locate the virtual CB that tripped, record the exactly circuit breaker(s) name for future reference and continue with next step.

  2. Physically disconnect the affected unit(s) powered by the SSPC (refer to System Schematic Manual 24-62-05). Set the tripped circuit breaker back in. Check if the CB stay in or not.

    1. If YES, replace the defective unit and do close out.
    2. If NO, continue with next step.

  3. Perform a continuity check between the affected SPDA output and the unit. Make sure you check for short circuits to ground and short circuits between the power and return.

    1. If there is no continuity, repair defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  4. Replace affected SPDA. In the MRA, mention the complete list of circuit breakers that were recorded in step 1.
  5. Do close out.

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