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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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04/26/21

Message Overview:

Message Name:

AIR DATA PFD FLAG (Caution)

Identifier: 341OBS001
Effectivity: AIRCRAFT 20501 - 20999
System: Navigation
Associated CAS: None
System Description: 34-17-00
Schematic Diagram: 34-13-00
Wiring Diagram: 31-61-13

Message Description:

The amber 'AIR DATA PFD' flag identifies that the ADC reversion has been selected and the indicated ADC is providing data to both PFDs.

  • The reversionary switching has selected one source for the ADCs, there is no system redundancy.

01_adc_c60_reversionary_switch_panel17_adc_indications

Possible Causes:

  • Air Data Source Select Switch Position
  • Reversion Select Panel (PL27)
  • Pilot Primary Flight Display (PFD) (A27)
  • Copilot Primary Flight Display (PFD) (A26)
  • Pilot Multi-function Display (MFD) (A29)
  • Copilot Multi-function Display (MFD) (A28)
  • Air Data Computer (ADC) 1 (A1)
  • Air Data Computer (ADC) 2 (A2)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Adaptive Flight-Display Unit AMM 31-61-01-000-801
Installation of the Adaptive Flight-Display Unit AMM 31-61-01-400-801
Removal of the Reversion Select Panel AMM 31-61-13-000-801
Installation of the Reversion Select Panel AMM 31-61-13-400-801
Removal of the Air Data Computer AMM 34-13-01-000-801
Installation of the Air Data Computer AMM 34-13-01-400-801
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Toggle the Air Data source select switch on the Reversion select panel to the "NORM" position for dual ADC data to clear the PFD flag.

    1. If the ADC flag is removed, do close out.
    2. If the ADC flag is still present, continue with next step.

  2. Are there any ADC related CAS or MDC fault messages present?

    1. If YES, refer to the proper SmartFix Plus troubleshooting page.
    2. If NO, continue with next step.

  3. Swap ADC 1 with ADC 2. Is the ADC flag still present with the same ADC?

    1. If YES, continue with next step.
    2. If NO, reinstall the ADCs back in their original position and replace defective ADC if necessary.

  4. Swap PFD 1 with PFD 2. Is the ADC flag still present with the same ADC?

    1. If YES, continue with next step.
    2. If NO, reinstall the PFDs back in their original position and replace defective PFD if necessary.

  5. Swap MFD 1 with MFD 2. Is the ADC flag still present with the same ADC?

    1. If YES, continue with next step.
    2. If NO, reinstall the MFDs back in their original position and replace defective MFD if necessary.

  6. Remove both PFDs, both MFDs and the Reversion select panel. Perform a wiring check between the Reversion select panel and the PFDs/MFDs as follows and repair defective wiring if required:

    From To Result
    PL27P1-24 A26P2-40
    PL27P1-24 A28P2-40
    PL27P1-9 A27P2-40
    PL27P1-9 A29P2-40

    NOTE: Make sure to also verify that the wiring is not short circuited to ground.

  7. Do close out.

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