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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:

CRC Montreal (YUL)
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03/29/21

Message Overview:

Message Name:

INVALID TCAS PROTOCOL

Message Code:

B3-008071

Associated CAS:

None

Reporting LRU: TCAS CH B
System Description: 34-43-00
Schematic Diagram: 34-43-00
Wiring Diagram: 34-43-01

Message Description:

TCAS Protocol is reported to be invalid (Not MODE S?).

Possible Causes:

  • Traffic Collision Avoidance System (TCAS) Protocol
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 10
  2. Comp Id = A005
  3. {Term Definitions}

    1. TDR2-15 2X 350 10 EXCT XXXX-XXXX TFTT-FTFF XXXX-XXXX 350: (B4);TCAS PROTOCOL
    2. TDR1-16 1X 350 01 EXCT XXXX-XXXX TFTT-FTFF XXXX-XXXX 350: (B4);TCAS PROTOCOL

Quick Links:

Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02

Troubleshooting Recommendations:

  1. TCAS Protocol is reported to be invalid (Not MODE S?).

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