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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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03/31/21

Message Overview:

Message Name:

NO OUTPUT

Message Code:

B3-539713

Associated CAS:

None

Reporting LRU: TSS-4100
System Description: 34-43-00
Schematic Diagram: 34-43-00
Wiring Diagram: 34-43-01
34-43-09

Message Description:

TSS data buses are inactive at both IOCs and reported failed by 3 of the following: L-MFD, L-PFD, R-MFD and R-PFD.

Possible Causes:

  • Traffic Alert And Collision-Avoidance System (TCAS) Transceiver (TSS-4100) (A238)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Traffic/Collision Avoidance System (TCAS) and
Traffic Surveillance System (TSS) Transponder Unit		 AMM 34-43-03-000-801
Installation of the Traffic/Collision Avoidance System (TCAS) and
Traffic Surveillance System (TSS) Transponder Unit		 AMM 34-43-03-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Reset TCAS/XPDR1 Circuit Breaker CB1-A5. Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, do close out.

  2. Replace Traffic/Collision Avoidance System (TCAS) and Traffic Surveillance System (TSS) Transponder Unit (A238).
  3. Do close out.

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