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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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03/01/21

Message Overview:

Message Name:

NO ADC-1 INPUT ON L-GP-5

Message Code:

B3-007889

Associated CAS:

SPOILERS FAULT
(Advisory)

Reporting LRU: SPOILER ECU 1
System Description: 27-61-00
Schematic Diagram: 27-61-00
Wiring Diagram: 27-61-05

Message Description:

No L-ADC-1 input through IOC 1 to SECU 1.

Possible Causes:

  • Air Data Computer 1 (ADC 1) (A1)
  • Spoiler Electronic-Control Unit 1 (SECU 1) (A118)
  • Input/Output Concentrator (IOC 1) (A4-IOC1)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Spoiler Electronic-Control Unit (SECU) AMM 27-61-05-000-801
Installation of the Spoiler Electronic-Control Unit (SECU) AMM 27-61-05-400-801
Electronic Rigging of the Spoiler Electronic-Control Unit (SECU) AMM 27-61-05-820-801
Electronic Rigging of the Spoiler Electronic-Control Unit (SECU) AMM 27-61-05-820-802
Removal of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-000-801
Installation of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-400-801
Operational Test of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-710-801
Removal of the Air Data Computer AMM 34-13-01-000-801
Installation of the Air Data Computer AMM 34-13-01-400-801
Functional Test of the Air Data Computer AMM 34-13-01-720-801
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. Swap ADCs.

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

  2. Swap SECUs.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.
      NOTE: Spoiler system must be rigged after SECU replacement.

  3. Swap IOCs.
  4. Do close out.

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