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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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06/22/21

Message Overview:

Message Name:

TRAFFIC/COLLISION AVOIDANCE SYSTEM (TCAS) COOLING FAN INOPERATIVE

Identifier: 215OBS017
Effectivity: AC9002 to AC9135 only
System: Air Conditioning System
Associated CAS: None
System Description: 21-54-00
Schematic Diagram: 21-54-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-43-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

TCAS fan does not operate.

Possible Causes:

  • Traffic/Collision Avoidance System (TCAS) Fan has an obstruction and cannot turn freely
  • Secondary Power Distribution Assembly (SPDA) 4
  • Traffic/Collision Avoidance System (TCAS) Fan
  • Traffic/Collision Avoidance System (TCAS) Fan Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Notice To Operators (NTO): None

Flight Operation Notifications Manual (FONM): None

Quick Links:

TCAS Cooling Fan - Removal AMM 21-54-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
TCAS Cooling Fan Cooling Fans - Installation AMM 21-54-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Secondary Power Distribution Assemblies - Removal AMM 24-62-01-000-801 >[ Global Express ]  [ G5000 ]  [ Global XRS ]
Secondary Power Distribution Assemblies - Installation AMM 24-62-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Check for 28 VDC power supplied to TCAS fan at SPDA4 A16P3 pin f.

    1. If no 28 VDC, continue with next step.
    2. If there is 28 VDC, go to step 3.

  2. Swap SPDA4.

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

  3. Perform wiring checks between TCAS fan and SPDA4.

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

  4. Replace defective TCAS fan.
  5. Do close out.

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