SPOILERS FAULT
(Caution)

One or more of the spoiler PCU panels have failed or one or more of the ground spoilers is up prior to touchdown.

• The spoiler system malfunction detection with automatic fail-safe shutdown and fault annunciation has detected a fault with a PCU or disagreement with command outputs with the PSEU inputs of ground spoiler position.
• Inhibited on ground when the engines are shutdown except for SECU failure.
• Also, inhibited when the SPOILERS FAIL (Amber) message is annunciated.

NOTE: A failed Radio Altimeter Transceiver (RAD ALT) can cause a SPOILER FAULT (Amber) CAS message to be posted.

• Data Concentrator Unit (DCU) (A14)
• Spoiler Electronic Control Unit 1 (SECU1) (A118)
• Spoiler Electronic Control Unit 2 (SECU2) (A119)
• Radio Altimeter Transceiver (RAD ALT) (A32)
• Throttle Quadrant Assembly (TQA) Spoiler Idle Switch (A51)
• Associated Wiring

Advisory Wire/Service Bulletin:

• AW300-27-0037 - Spoiler Electronic Control Unit (SECU) - Circuit Breaker Reset Procedure
• AW300-27-0077 - Troubleshooting Guide for Spoiler Electronic Control Unit and Horizontal Stabilizer Trim Electronic Control Unit
• AW300-27-0081 - Spoiler Electronic Control Unit (SECU) and Horizontal Stabilizer Electronic Control Unit (HSTECU) - Cold Temperature Circuit Breaker Reset Procedure
• AW300-27-0302 - SPOILERS FAULT EICAS Message Caused by TQA Idle Switch
• AW300-27-0317 - SPOILERS FAULT EICAS message caused by SECU INTERNAL FAULT
• AW300-27-0322 - Introduction of new SECU software for PN C47330-006/006A, C47330-008/008A and C47330-011

Forum Articles/Infoservice/Newsletter: None

NOTE: If CAS messages SPOILERS FAULT (Caution), SPOILERS FAULT (Advisory) and STAB TRIM FAULT (Advisory) are all displayed at the same time on the EICAS momentarily for few seconds (between 3 to 20 seconds) and possibly MDC messages B3-007899 - XTALK ARINC BUS [SPOILER ECU 1] or B3-007932 - XTALK ARINC BUS [SPOILER ECU 2], B3-007882 - NO L-SECU-1 BUS TO DCU [SPOILER ECU 1], B3-007915 - NO R-SECU-1 BUS TO DCU [SPOILER ECU 2] and B3-007969 - INVALID SECU INPUT [STALL COMPUTER] displayed together in the fault message history at the time of failure, download and send both SECU NVM files to the Bombardier Customer Response Center (CRC) for analysis.

1. If you experience a SPOILERS FAULT - Amber or Cyan EICAS message, combined with a B3-007883 and/or B3-007916 MDC fault in the CURRENT FAULTS and/or FAULT HISTORY, in order to prevent an unnecessary removal, ask the crew to perform MDC and SECU NVM download and look if the fault was triggered by "LTQAIdSwID" or "RTQAIdSwID" in the SECU NVM. If this is the case, replacing the TQA will fix the issue.
2. If the fault is intermittent and is related to one specific SECU, swap the SECU 1 and 2 and perform an electronic rigging. Monitor the condition and if the fault returns and has followed the SECU, remove and replace the unit.
   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 per the instructions in AMM TASK 27-61-05-400-801 Installation of the Spoiler Electronic-Control Unit (SECU).
3. Refer to AW300-27-0037, the radio altimeter system may interfere with the system proper operation. Additional information can be gained from the MDC non-volatile report page by checking the individual SECU for faults.
   NOTE: A metallic or reflective surface (Water, Ice, metal plates, metal grills, etc...) underneath the RA antennas when aircraft is on the ground can cause erratic readings and cause the unit to fail. The first thing that should be attempted is move the A/C a few feet and test the system again.
4. Retrieve from MDC faults associated to the spoiler system, either nomenclature, or Equation ID #.
   Select an MDC Fault Code/Message:B3-006797 - L CH A RVDT OUT OF RANGE [FSCL RVDT 1]B3-006798 - R CH A RVDT OUT OF RANGE [FSCL RVDT 2]B3-006799 - L CH B RVDT OUT OF RANGE [FSCL RVDT 3]B3-006800 - R CH B RVDT OUT OF RANGE [FSCL RVDT 4]B3-006823 - GSSV FAIL [GSSV 1]B3-006824 - GSSV FAIL [GSSV 2]B3-007230 - LVDT OUT OF RANGE [MF SPOILER LVDT1]B3-007231 - LVDT OUT OF RANGE [MF SPOILER LVDT2]B3-007232 - LVDT OUT OF RANGE [MF SPOILER LVDT7]B3-007233 - LVDT OUT OF RANGE [MF SPOILER LVDT8]B3-007328 - RESOLVER FAILED [PILOT CW RES 1]B3-007329 - RESOLVER FAILED [PILOT CW RES 2]B3-007882 - NO L-SECU-1 BUS TO DCU [SPOILER ECU 1]B3-007910 - L IB GR SPOILER [SPOILER ECU 1]B3-007911 - R IB GR SPOILER [SPOILER ECU 1]B3-007912 - L IB MF SPOILER [SPOILER ECU 1]B3-007913 - R IB MF SPOILER [SPOILER ECU 1]B3-007915 - NO R-SECU-1 BUS TO DCU [SPOILER ECU 2]B3-007918 - ROLL SPOILR OFF SW FAIL [SPOILER ECU 2]B3-007943 - L OB GR SPOILER [SPOILER ECU 2]B3-007944 - R OB GR SPOILER [SPOILER ECU 2]B3-007945 - L OB MF SPOILER [SPOILER ECU 2]B3-007946 - R OB MF SPOILER [SPOILER ECU 2]B3-326112 - RVDT OUT OF RANGE [MF SPOILER RVDT1]B3-326113 - RVDT OUT OF RANGE [MF SPOILER RVDT2]B3-326114 - RVDT OUT OF RANGE [MF SPOILER RVDT7]