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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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Quick Links

03/19/21

Message Overview:

Message Name:

NO OUTPUT

Message Code:

B3-006560

Associated CAS:

None

Reporting LRU: DME 1
System Description: 34-53-00
Schematic Diagram: 34-53-00
Wiring Diagram: 34-53-01

Message Description:

No data received from DME channel to RIU.

Possible Causes:

  • Circuit Breakers (LCBP A2, LCBP B4, LCBP B5)
  • Distance Measuring Equipment (DME) Transceiver 1 (LH) (A49)
  • Radio Interface Unit (RIU) 1 (A17)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. LRU = DME1 DME 1
  2. ATA Chapter = 34-53
  3. Message# = 1
  4. Comp Id = A049
  5. {Term Definitions}

    1. DME1-1 1X 057 01 ABSN XXXX-XXXX XXXX-XXXX XXXX-XXXX 057: (A) NO IOC 1X IN;
    2. RIU1-20 1X 351 01 EXCT XXXX-XXXX XXXX-XXXX XXTX-XXXX 351: 14;L-DME-3 INPUT INACTIVE

Quick Links:

Removal of the Radio Interface Unit (RIU) AMM 23-51-21-000-801
Installation of the Radio Interface Unit (RIU) AMM 23-51-21-400-801
Removal of the Distance Measuring Equipment (DME) Transceiver AMM 34-53-01-000-801
Installation of the Distance Measuring Equipment (DME) Transceiver AMM 34-53-01-400-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Suspect a breaker has been pulled and power is not applied or LRU is faulty and should be replaced or a bad wire to RIU or failed RIU INPUT.

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