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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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09/17/19

Message Overview:

Fault Message:

INLET TEMP SENSOR [SIGNAL OUT LOW]

Fault Code:

4960195APU

Associated CAS:

None

Reporting LRU: Full-Authority Digital Engine-Controller (FADEC)
System Description: 49-60-00
Schematic Diagram: None
Wiring Diagram: None

Fault Description:

Inlet Temperature signal lower than -67.8°C (-90°F) when Weight-On-Wheels signal is true or less than -84.4°C (-120°F) when Weight-On-Wheels signal is not true.

Possible Causes:

  • Pack Inlet Temperature Sensor 1 (E23)
  • Pack Inlet Temperature Sensor 2 (E29)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

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