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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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08/19/22

Message Overview:

APU BLEED SYS FAIL
(Caution)

DDG Reference: 49-52-01
Pilot Action (QRH): ABNORM 4-2
System Description: 36-11-00
Schematic Diagram: 36-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 36-11-03 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

The position of the butterfly plate of the load control valve does not agree with the signal that was sent by the FADEC.

Possible Causes:

  • Load Control Valve (LCV)
  • Left Bleed Leak Detection Loops
  • Right Bleed Leak Detection Loops
  • Cross Bleed Valve (CBV)
  • Bleed Management Controller (BMC)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-36-0365 - Bleed management controller - Data Gathering to reduce No Fault Found (NFF) rate

Forum Articles/Infoservice/Newsletter:

BMC NFF Action:
To support the technical investigation, FSRs and Service Centers are requested to perform an NVM download and complete a condition report and (BMC) PN GG546-1017-XX questionnaire when troubleshooting or removing a Bleed Management Controller (BMC) PN GG546-1017-XX.
NOTE: To avoid the display of any Bleed related CAS nuisance message after replacement of BMC due to internal failure, follow AW700-36-0365 instructions.

  • Proceed to a QAR (if available) download of the last three flights (Aircraft meeting FAR part 135.172.), SB 700-31-020
  • BMC NVM download
  • IAC CAS messages download

Quick Links:

Bleed Air Leak Detection System - Maintenance Practices AMM 36-12-00-910-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Bleed Management Controller (BMC) AMM 36-11-33-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Bleed Management Controller (BMC) AMM 36-11-33-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Cross Bleed Valve AMM 36-11-29-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Cross Bleed Valve AMM 36-11-29-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Load Control Valve AMM 49-52-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Load Control Valve AMM 49-52-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Select related CAIMS message below.

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