03/01/21
Message Overview:
Message Description:
Spoiler Electronic Control Unit 1 (SECU1) has detected a Roll Disconnect Switch Fault.
Possible Causes:
- Roll Disconnect Microswitch (S114)
- Spoiler Electronic-Control Unit (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
NOTE: During wiring checks reference BD-100 Schematic Manual 27-62-00 page 3 to aid in ring-out.
Quick Links:
| Removal of the Roll Disconnect Microswitch | AMM 27-11-09-000-801 |
| Installation of the Roll Disconnect Microswitch | AMM 27-11-09-400-801 |
| Operational Test of the Roll Disconnect Microswitch | AMM 27-11-09-710-801 |
| 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:
- Swap SECUs.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Perform wiring checks from S114 (pilot roll disconnect switch) and ring out to SECU 1. Terminal 1 of switch should have a ground.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace S114 pilot roll disconnect switch.
- Do close out.