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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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04/06/21

Message Overview:


Message Name:

TURBULENCE NOTIFICATION
(Service message)

Message Code:

B3-659091

Associated CAS:

None

Reporting LRU: WXR RTA
System Description: 34-41-00
Schematic Diagram: 34-41-00
Wiring Diagram: 34-41-01



Message Description:

The turbulence notification occurs when invalid/incorrect ARINC 429 inputs are received by the WXR while there is no absence of the left (L-IOC-2) or right (R-IOC-2) control bus.

Possible Causes:

  • Weather Radar Receiver/Transmitter and Antenna (WXR RTA) (A3)
  • L Global Positioning System 1 (GPS) (A25)
  • R Global Positioning System 2 (GPS) (A24)
  • L Air Data Computer (ADC) (A1)
  • R Air Data Computer (ADC) (A2)
  • Flight Management Computer 1 (FMC) (A4-FMC1)
  • Flight Management Computer 2 (FMC) (A4-FMC2)
  • Inertial Reference System 1 (IRU) (A233)
  • Inertial Reference System 2 (IRU) (A232)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

This message is NEVER logged and can only be seen in the current fault menu.

Turbulence function is not available due to an absence of any of the following labels:

  • Baro Altitude Label 203
  • True Air speed Label 210
  • Ground Speed Label 312
  • Track Angle Label 313
  • True Heading Label 31

Quick Links:

Removal of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) AMM 31-45-01-000-801
Installation of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) AMM 31-45-01-400-801
Removal of the Air Data Computer AMM 34-13-01-000-801
Installation of the Air Data Computer AMM 34-13-01-400-801
Removal of the Inertial Reference Unit (IRU) AMM 34-45-01-000-801
Installation of the Inertial Reference Unit (IRU) AMM 34-45-01-400-801
Removal of the Global Positioning Receiver AMM 34-55-01-000-801
Installation of the Global Positioning Receiver AMM 34-55-01-400-801
Removal of the Flight Management Computer (FMC) AMM 34-61-01-000-801
Installation of the Flight Management Computer (FMC) AMM 34-61-01-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Repair Wiring SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Verify MDC for any faults related to the following systems outputs: ADC, FMC.
  2. Troubleshoot the defective system according to the B3 code found.

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