background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults By CAIMS By Tips

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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

05/03/21

Message Overview:

PASSENGER OXY ON
(Advisory)

DDG Reference: None
Pilot Action (QRH): ADVISORY 13-2
System Description: 35-20-00
Schematic Diagram: 35-11-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 35-21-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

  • Oxygen is supplied to Passenger Masks manually
  • When Cabin Altitude reaches 14,500 +500 / -700 ft
  • Oxygen Test Switch in test

If any above condition is not true, then the following steps apply.

Possible Causes:

  • Oxygen Test Switch
  • Oxygen Line Pressure Switch
  • Data Acquisition Unit (DAU) 4
  • Relay K750 (in Copilot Bulkhead)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Notice To Operators (NTO): None

Flight Operation Notifications Manual (FONM): None

Quick Links:

Removal of Data Acquisition Units AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Data Acquisition Units AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of Passenger Oxygen Control Panel AMM 35-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of Passenger Oxygen Control AMM 35-21-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Interchange DAUs.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  2. Perform wiring check between DAU 4, K750, Oxygen line pressure switch and Oxygen test switch.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Replace Oxygen line pressure switch.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  4. Replace Passenger Oxygen Control.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  5. Replace K750.
  6. Do close out.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.