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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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02/14/25

Message Overview:

ADC 2 DEGRADED
(Advisory)

DDG Reference: 34-11
Pilot Action (QRH): ADVISORY 11-2
System Description: 34-11-00 - Air Data Computer System
Schematic Diagram: 34-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 34-11-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

Set when ADC 2 is unreliable. Degraded static error correction.

Possible Causes:

  • Air Data Computer (ADC 2)
  • ADC 2 Interface Systems
  • DCPC Contactor K2
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-34-0346 - Micro Air Data Computer - Altitude Split Troubleshooting Procedures and No Fault Found Update

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

NOTES:

  • Use the No. 2 Micro Air Data Computer (MADC) or Advanced Micro Air Data Computer (AMADC) Troubleshooting Checklist and the Flight Test Data Sheet (Appendix A in the AW700-34-0346).

Quick Links:

Connect Electrical Power to the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-801
Remove the Electrical Power from the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-802
Removal of the DC Power Center (DCPC) L-Series Contactor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-53-000-801
Installation of the DC Power Center (DCPC) L-Series Contactor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-53-400-801
Operational Test of the DC Power Center (DCPC) L-Series Contactor [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-53-710-801
Removal of the Micro Air-Data Computers [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM34-11-09-000-801
Installation of the Micro Air-Data Computers [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM34-11-09-400-801
Operational Test of the Micro Air-Data Computers [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM34-11-09-710-801
Access to Active Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-802
Access to Stored Faults [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM45-45-00-970-803
Standard Aircraft Configuration for Maintenance [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-801
Aircraft Walkaround (for Maintenance) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-802

Troubleshooting Recommendations:

  1. Check if the following CAS messages are posted:

    • FMS#2 FAIL (cyan)
    • ADC 2 DEGRADED (cyan) 
    • ADC 3 FAIL (cyan)

    1. If YES, continue with next step.
    2. If NO go to step 3.

  2. Pull ESS BUS TRU 1 CB, (To drive DCPC reconfiguration) Are the CAS messages posted?

    1. If YES, continue with next step.
    2. If NO, DCPC contactor K2 is highly suspected, inspect the contactor.

  3. Using PMAT, access the Active Fault/Stored Fault as per AMM Tasks.
  4. Select related CAIMS message below:

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