03/02/21
Message Overview:
Message Description:
The Spoiler Electronic Control Unit 2 (SECU2) has detected a Ground Spoiler Select Switch (GSSS) Fault.
Possible Causes:
- Switch (GSSS) Ground Spoiler Select Switch (S74)
- Spoiler Electronic-Control Unit 2 (SECU #2) (A119)
- 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 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 GND/ROLL SPOILERS Control-Panel | AMM 27-63-11-000-801 |
| Installation of the GND/ROLL SPOILERS Control-Panel | AMM 27-63-11-400-801 |
| 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:
- Swap SECUs.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Perform wiring checks from Ground Spoiler Select Switch to SECU 2.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace GSSS/GND/ROLL SPOILERS Control Panel.
- Do close out.