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System Description
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Select color for CAS message that you wish to troubleshoot

(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)
Quick Links

12/04/15

Overview

The distribution system supplies pressurized bleed air from the engines, auxiliary power unit (APU), or high-pressure ground connection to the dependent systems.

Pressurized air from the distribution system is supplied to the air-conditioning system, engine start system, wing and cowl anti-ice system. The systems control the pressurized air through ducts, shutoff valves (SOVs), check valves, and other valves.

The EICAS messages display shown gives the related messages for the distribution system.

The distribution system has interfaces with the systems that follow:

  • Air conditioning
  • Ice and rain protection
  • Airborne auxiliary power
  • Starting

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