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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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For AOG assistance contact:

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Quick Links

04/26/21

Message Overview:

Message Name:

STANDBY INSTRUMENT BATTERY NEEDS SERVICE

Identifier: 243OBS002
Effectivity: Aircraft: 20501 - 20999
System: Electrical
Associated CAS: None
System Description: 24-32-00
Schematic Diagram: 24-32-00
Wiring Diagram: 24-32-05 (20001-20005, 20020 - 20500)
24-32-05 20006 - 20019)

Message Description:

Standby Instrument Battery needs serviced.

Possible Causes:

  • Standby Instrument Battery (ISI BATT)
  • Remote Data Concentrator Unit (RDC) (A13)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter:

Quick Links:

Removal of the Standby Instrument Battery AMM 24-32-05-000-801
Installation of the Standby Instrument Battery AMM 24-32-05-400-801
Removal of the Junction Boxes AMM 24-63-01-000-802
Installation of the Junction Boxes AMM 24-63-01-400-802
Removal of the Remote Data Concentrator (RDC) AMM 31-41-05-000-802
Installation of the Remote Data Concentrator (RDC) AMM 31-41-05-400-802
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  2. Do close out.

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