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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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07/08/19

Message Overview:

TRIM AIR FAIL
(Caution)

DDG Reference: TC Only
Pilot Action (QRH): ABNORM 2-4
System Description: 21-60-00
Schematic Diagram: 21-60-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-60-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

When one or more of the conditions that follow occur:

  • The temperature of the distribution duct is above 90°C (194°F) for 30 seconds
  • The temperature of the distribution duct is above 120°C (248°F) for 10 seconds with the emergency pressurization on
    • OR
  • Both the trim-air leak-detection loops are defective

Possible Causes:

  • Hot air shut-off valves is failed in either the closed position or the open position.
  • Trim Air Valve
  • Duct Temperature Sensor
  • Trim Air Leak Detection Loop
  • Air-Conditioning System Controllers (ACSCs)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Ventilated Temperature Sensors AMM 21-60-25-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Ventilated Temperature Sensors AMM 21-60-25-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Duct Temperature Sensors AMM 21-60-17-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Duct Temperature Sensors AMM 21-60-17-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Air Conditioning System Controllers AMM 21-60-21-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Air Conditioning System Controllers AMM 21-60-21-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Active Faults AMM 45-45-00-970-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Stored Faults AMM 45-45-00-970-803 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Select a fault message below:

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