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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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04/26/21

Message Overview:

Message Name:

SYSTEM TEST PANEL INTERMITTENT

Identifier: 315OBS001
Effectivity: Aircraft 20501 - 20999
System: Indicating & Recording
Associated CAS: None
System Description: 31-52-00
Schematic Diagram: None
Wiring Diagram: 31-52-25

Message Description:

Systems will not test using rotary switch. They will intermittently test when rotary switch is held down and moved back and forth.

Possible Causes:

  • System Test Panel (PL22)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletins: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the SYSTEM TEST Control-Panel AMM 31-52-25-000-801
Installation of the SYSTEM TEST Control-Panel AMM 31-52-25-400-801
Operational Test of the SYSTEM TEST Control-Panel AMM 31-52-25-710-801
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Replace System Test Panel PL22.
  2. Test per AMM Task 31-52-25-710-801.
  3. Do close out.

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