09/12/19
Message Overview:
Fault Message:
LEFT COWL AI PRESSURE XDCR /WRG
Fault Code:
3615425BMC
Associated CAS:
| Reporting LRU: | Bleed Management Controller (BMC) 1 |
| System Description: | 30-21-00 |
| Schematic Diagram: | 30-21-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 36-11-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
The Cowl Anti-ice (CAI) Pressure Sensor 1 has been detected out of range by Bleed Management Controller (BMC) 1. Inhibited during Take-Off and Landing.
Possible Causes:
- Cowl Anti-ice (CAI) Pressure Sensor
- Junction Box 3 (JB3)
- Bleed Management Controller (BMC) 1 (A69)
- Secondary-Power Distribution Assembly (SPDA) 4 (A16)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin:
- AW700-36-0365 - Bleed management controller - Data Gathering to reduce No Fault Found (NFF) rate
Forum Articles/Infoservice/Newsletter:
- Forum Article 2011-VOL 8 issue 23 - Bleed Management Controller (BMC) Top 10 No Fault Found (NFF) vs. Reliability Improvement Modification Program (RIMP) implementation
Questionnaire for replacing the BMC. Follow instructions using this (Fill out form).
NOTE: Always verify you are working with the current document revision. Access the CIC website to ensure the latest document revision.
Quick Links:
| Removal of the Junction Box JB3 | AMM 24-00-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Junction Box JB3 | AMM 24-00-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Secondary-Power Distribution Assemblies | AMM 24-62-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Secondary-Power Distribution Assemblies | AMM 24-62-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Bleed Management Controller | AMM 36-11-33-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Bleed Management Controller | AMM 36-11-33-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of the Cowls | AMM 71-10-00-010-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of the Cowls | AMM 71-10-00-410-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the CAI Pressure sensors | EMM 71-11-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the CAI Pressure sensors | EMM 71-11-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Swap Left CAI Pressure sensors (BR710-A2 EMM: 71-11-01-000-801 & 71-11-01-400-801-Subtasks 71-11-01-020-001, step 6 and 71-11-01-420-001, step A.3) with Right CAI Pressure sensors.
- If system checks are good, replace Left CAI Pressure sensors and do close out.
- If fault remains, continue with next step.
- Swap BMC 1 with BMC 2.
- If system checks are good, replace BMC 1 and do close out.
- If fault remains, continue with next step.
- Swap SPDA 4 with SPDA 2.
- If system checks are good, replace SPDA 4 and do close out.
- If fault remains, continue with next step.
- Perform wiring checks between CAIPS1, JB 3, SPDA 4 and BMC 1.
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Replace JB3.
- Do close out.