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

06/22/21

Message Overview:

Message Name:

PRESSURIZATION BUMP ON DESCENT

Identifier: 213OBS003
Effectivity: All
System: Pressurization Control
Associated CAS: None
System Description: 21-31-00
Schematic Diagram: 21-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 21-31-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Message Description:

A pressurization "bump" is observed during descent or approach. This may be prevalent on approaches that have many "Level Off" phases.

Possible Causes:

  • Cabin Pressure Controller (CPC) altitude recalculation
  • CPC Primary/Secondary mode switching

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW700-21-0703 - Pressurization sequence during multiple steps approach

Forum Articles/Infoservice/Newsletter:

Notice To Operators (NTO): None

Flight Operation Notifications Manual (FONM): None



Quick Links:

None

Troubleshooting Recommendations:

  1. Please familiarize yourself with the content of the Forum Newsletter Article pertaining on the pressurization sequence and the interactions between the primary and secondary modes.
  2. Take note of the mitigation measures that the crew can apply for this condition.
  3. Do close out.

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