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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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03/10/21

Message Overview:

Message Name:

MLGWOW SPC-A OVLD FAULT

Message Code:

B3-006584

Associated CAS:

None

Reporting LRU: SPC-A;MLGWOW
System Description: 32-60-00
Schematic Diagram: 32-61-00
Wiring Diagram: 27-32-01
27-32-05
32-61-09

Message Description:

PSEU detects an overload on the discrete output to the Stall Protection Computer (SPC) Channel A. Verify user interface, SPC-A A178 and related wiring.

Possible Causes:

  • Stall Protection Computer (SPC) (A178)
  • Proximity-Sensor Electronic Unit (PSEU) (A9)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Operational Test of the Stall Protection System (SPS) AMM 27-32-00-710-801
Removal of the Stall Protection Computer AMM 27-32-01-000-801
Installation of the Stall Protection Computer AMM 27-32-01-400-801
Removal of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-000-801
Installation of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-400-801
Functional Test of the Proximity-Sensor Electronic Unit (PSEU) AMM 32-61-09-720-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Do wiring check from the SPC connector A178AP1 Pin 28 to the PSEU connector A9AP1 Pin 5J. Repair as required.

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

  2. Replace the SPC.

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

  3. Replace the PSEU.
  4. Do close out.

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