background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy 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

04/27/21

Message Overview:

Message Name:

PASSENGER DOOR HISSING NOISE

Identifier: 521OBS001
Effectivity: Aircraft 20501 - 20999
System: Doors
Associated CAS: None
System Description: 52-00-00
Schematic Diagram: None
Wiring Diagram: None

Message Description:

Noisy hissing sound coming from the Passenger Door can be heard during flight.

Possible Causes:

  • Passenger Door Seal
  • Lower Step Anti-slip Mat

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Engineering Documentation:

Quick Links:

Removal of the Passenger Door Seal AMM 52-11-29-000-801
Detailed Inspection of the Passenger Door Seal> AMM 52-11-29-220-801
Installation of the Passenger Door Seal AMM 52-11-29-400-801
Standard Practices Manual - Maintenance SPM 51
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Do the Detailed Inspection of the Passenger Door Seal.

    1. If the seal has cracks or other damaged, replace the Passenger Door Seal.
    2. If the seal is incorrectly installed, re-install the Passenger Door Seal.

  2. Visually inspect the Lower Step anti-slip mat for correct installation.

    1. If the mat is not bonded (unglued), perform the procedure of RIL BD-033.
    2. If the mat is damaged, replace the mat (refer to RIL BD-033 for improved installation).
    3. If the mat is correctly installed, continue with next step.

  3. Check and adjust the Main door vent flap if required.
  4. Do close out.

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