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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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04/26/21

Message Overview:

Message Name:

LOSS OF PRIMARY COMMUNICATIONS & INTERMITTENT MULTI-FUNCTION DISPLAY INFORMATION

Identifier: 230OBS001
Effectivity: AIRCRAFT: 20501 - 20999
System: Communication
Associated CAS: None
System Description: 23-11-00
Schematic Diagram: 23-11-00
Wiring Diagram: 23-11-01

Message Description:

Radio frequency information on the MFD & CDU turning amber and possible changing frequency.

Possible Causes:

  • Adaptable Flight Display (AFD) Multi-Function Display 1 (A29)
  • Adaptable Flight Display (AFD) Multi-Function Display 2 (A28)

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

There have been several in-service reports of radio frequency information on the MFD & CDU turning amber and sometimes the frequency was changing. In some cases, other information on the MFD display such as flight control position and engine indication information was flickering.

RC Reversion Panel Ground Checkout Procedures

Quick Links:

None

Troubleshooting Recommendations:

  1. See AW300-34-0091 for troubleshooting.

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