04/24/25
Message Overview:
Message Name:
[BMC1] L WING OUTBD LEAK D LOOP/WRG
Message Code:
3615529BMC
| Reporting LRU: | Bleed Management Controller 1 (BMC) |
| Associated CAS: | L WING A/ICE FAIL (Caution) WING A/ICE FAULT (Advisory) |
| System Description: | 36-12-00 - Bleed-Air Leak-Detection System |
| Schematic Diagram: | [ G5000 ] [ Global Express ] [ Global XRS ] SSM 36-12-00-101 - Bleed Air Leak Detection System - Electrical Schematic |
| Wiring Diagram: | [ G5000 ] [ Global Express ] [ Global XRS ] WM 36-12-00-1_001 - Sheet 1 - Left Wing Leading Edge - [9004-9024] [ G5000 ] [ Global Express ] [ Global XRS ] WM 36-12-01-1_001 - Sheet 1 - Wing Leading Edge (Left) - ALL |
Message Description:
The Left Wing Outboard Loop circuit connected to Bleed Management Controller 1 (BMC) has been detected with an Open Center Conductor or short circuit between the Center Conductor and the Outer Sheath. Inhibited during Take-Off and Landing.
Possible Causes:
- Bleed Air Leak Detection System
- Left Wing Outboard Loops
- Bleed Management Controller 1 (BMC) (A69)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin:
- AW700-36-0365 - Bleed management controller - Data Gathering to reduce No Fault Found (NFF) rate
- 700T-0006 - Revision 1 - WING A/ICE FAULT (Advisory) EICAS Messages
- SB700-30-020 - Modification - Wing Anti-Icing System - Introduction of Improved Telescopic Wiring for the Leading Edge and Slat
Full Throttle Blog/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
- Infoservice_Global_Dec_1999 - Wing Anti-Ice Fault Spurious EICAS Messages (Dec/1999)
- Questionnaire for replacing the BMC. Follow instructions using this (Fill out form)
Flight Operation Notifications Manual (FONM): None
NOTES:
- Always verify you are working with the current document revision. Access the CIC website to ensure the latest document revision.
Quick Links:
| Grounding of the Aircraft | [ G5000 ] [ Global Express ] [ Global XRS ] AMM10-11-00-867-801 |
| Removal of the Covers and Plugs | [ G5000 ] [ Global Express ] [ Global XRS ] AMM10-12-00-020-801 |
| Installation of the Covers and Plugs | [ G5000 ] [ Global Express ] [ Global XRS ] AMM10-12-00-420-801 |
| Standard Aircraft Configuration for Maintenance | [ G5000 ] [ Global Express ] [ Global XRS ] AMM12-00-00-867-801 |
| Aircraft Walkaround (for Maintenance) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM12-00-00-867-802 |
| Connect Electrical Power to the Aircraft | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-00-00-861-801 |
| Remove the Electrical Power from the Aircraft | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-00-00-861-802 |
| Electrical/Electronic Safety Precautions | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-00-00-910-801 |
| Electrostatic Discharge Safety Precautions | [ G5000 ] [ Global Express ] [ Global XRS ] AMM24-00-00-910-802 |
| Removal of the Bleed Management Controller | [ G5000 ] [ Global Express ] [ Global XRS ] AMM36-11-33-000-801 |
| Installation of the Bleed Management Controller | [ G5000 ] [ Global Express ] [ Global XRS ] AMM36-11-33-400-801 |
| Operational Test of the Bleed Management Controller | [ G5000 ] [ Global Express ] [ Global XRS ] AMM36-11-33-710-801 |
| Bleed Leak-Detection-Loops and Components Maintenance Practices | [ G5000 ] [ Global Express ] [ Global XRS ] AMM36-12-00-910-801 |
| Operational Test of the Bleed Leak-Detection-Loops | [ G5000 ] [ Global Express ] [ Global XRS ] AMM36-12-01-710-801 |
| Access to Active Faults | [ G5000 ] [ Global Express ] [ Global XRS ] AMM45-45-00-970-802 |
| Access to Stored Faults | [ G5000 ] [ Global Express ] [ Global XRS ] AMM45-45-00-970-803 |
| Access to System Diagnostics | [ G5000 ] [ Global Express ] [ Global XRS ] AMM45-45-00-970-804 |
| Flight Deck Effect to Fault Correlations | [ G5000 ] [ Global Express ] [ Global XRS ] AMM45-45-00-970-821 |
| Removal of the Slat Access Panels (from 511AZ/611AZ to 514DZ/614DZ) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM57-42-01-000-802 |
| Installation of the Slat Access Panels (from 511AZ/611AZ to 514DZ/614DZ) | [ G5000 ] [ Global Express ] [ Global XRS ] AMM57-42-01-400-802 |
| Wire Repair - Maintenance Practices - ALL | [ G5000 ] [ Global Express ] [ Global XRS ] SPM20-12-10-02 |
Troubleshooting Recommendations:
- Disconnect A69P2 from BMC 1.
- Measure Insulation resistance and line resistance of the detection loops as per the Leak Detection Elements troubleshooting sheet. Make sure line resistance and insulation values are within the specified limits.
NOTE: Please be aware that the outer conductor of the wires going to the telescopic duct harness connectors are connected to the backshell/shield instead of a pin as shown in the wiring schematic in this procedure for aircraft 9161 and subs and aircraft post SB 700-30-020.- If the values are within specified limits, go to step 4.
- If values are not within the specified limits, continue with next step.
- Replace faulty elements.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Make sure the Leak Detection Elements are installed as per Bleed Air Leak Detection System-Maintenance Practices.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Perform wiring checks of the remaining wires linking the Left WING OUTBOARD Loops circuit to 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 BMC 1.
- Do close out.
