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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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Quick Links

09/25/19

Message Overview:

Fault Message:

R ARINC CH B [INPUT] ADCS

Fault Code:

7326429RBR

Associated CAS:

R FADEC FAIL
(Caution)

R FADEC FAULT
(Advisory)

Reporting LRU: Engine Electronic Controller (EEC) 2
System Description: 73-20-00
Schematic Diagram: 76-10-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 71-50-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Secondary input bus fault detected (Air Data Computer 1) by Right Engine Electronic Controller (EEC) channel B.

Possible Causes:

  • Right Engine Electronic Controller (EEC)
  • Micro Air-Data Computer (MADC) 1 (A27)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Micro Air-Data Computers AMM 34-11-09-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Micro Air-Data Computers AMM 34-11-09-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Eng Electronic Controller (EEC) EMM 73-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Eng Electronic Controller (EEC) EMM 73-21-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Check if the ADC 1 FAIL CAS message is displayed on the EICAS.

    1. If the message exists, troubleshoot it first and continue with next step.
    2. If the message does not exists, continue with next step.

  2. Access ADC 1 connector (A27P1) and EEC 2 connector (P1048). Perform a continuity check as follows:

    From To Result
    A27P1-63 P1048-34
    A27P1-64 P1048-56

    1. If there is no continuity, repair defective wiring as required and do close out.
    2. If there is continuity, continue with next step.

  3. Perform a continuity check as follows:

    From To Result
    A27P1-63 Ground
    A27P1-64 Ground

    1. If there is continuity, repair defective wiring as required and do close out.
    2. If there is no continuity, continue with next step.

  4. Swap ADC 1 with ADC 3. Is the message still present?

    1. If NO, replace ADC 1 and do close out.
    2. If YES, continue with next step.

  5. Replace EEC 2.
  6. Do close out.

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