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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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08/09/21

Message Overview:

Message Name:

L CH B RVDT OUT OF RANGE

Message Code:

B3-006799

Associated CAS:

FLT SPOILERS FAULT
(Caution)

Reporting LRU: FSCL RVDT 3
System Description: 27-62-00
Schematic Diagram: 27-62-00
Wiring Diagram: 27-61-01

Message Description:

The Spoiler Electronic Control Unit #2 (SECU2) has detected Flight Spoiler Control Lever (FSCL) RVDT 3 out of range.

Possible Causes:

  • Flight Spoiler Control Lever (FSCL) RVDT 3
  • Spoiler Electronic Control Unit #1 (SECU 1) (A118)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

  • AW300-27-0037 - Spoiler Electronic Control Unit (SECU) - Circuit Breaker Reset Procedure (20501 - 20999)

Forum Articles/Infoservice/Newsletter: None

  • Reset SECU1 circuit breaker "SPOILER CTRL 1" CBP1-B9 if any of the inboard MFS and GS #2, #4, #5 and #7 surface indication are amber or magenta.
  • Reset SECU2 circuit breaker "SPOILER CTRL 2" CBP2-B9 if any of the inboard MFS and GS #1, #3, #6 and #8 surface indication are amber or magenta.

NOTE: It is not permissible to cycle the SECU 1 or 2 circuit breakers in the air.

Quick Links:

Removal of the Flight-Spoiler Control Lever AMM 27-61-01-000-801
Installation of the Flight-Spoiler Control Lever AMM 27-61-01-400-801
Operational Test of the Flight-Spoiler Control Lever AMM 27-61-01-710-801
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
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. Re-rig SECU 1.
  2. Visually inspect the back of the box for pin damage or in the rack. If damaged, repair pin.
  3. Swap SECU 1 with SECU 2. If problem follows, replace SECU 1.
    NOTE: Perform electronic rigging of both SECUs when either SECU is swapped or replaced. The intent is if a SECU that is being installed was previously rigged in a different location in the same aircraft or it is being installed in a different aircraft or the SECU is a spare part it requires electronic rigging (AMM 27-61-05-820-802) per the instructions in AMM TASK 27-61-05-400-801 Installation of the Spoiler Electronic-Control Unit (SECU).
  4. Check wiring from FSCL RVDT 2 to SECU 1. If damaged, repair wiring.
  5. Check FSCL RVDT 2 coil resistance.

    1. Remove SECU 1 and locate connector A118AP1.
    2. Pin 2J to 1F = 91Ω ±5%.
    3. Pin 2K to 1F = 91Ω ±5%.
    4. Pin 7K to 7J = 197Ω ±5%.
    5. If coil resistances are out of tolerance, then replace FSCL.

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