WING A/ICE LOOP FAIL
(Advisory)

The cyan 'WING A/ICE LOOP FAIL' advisory CAS message is posted by either IASC #1B or IASC #2B when both loops of the wing anti-ice ducting are detected failed, (shorted or open). The two wing anti-ice lead detection loops have failed.

• Both loops of the Wing Anti-Ice Ducting are detected failed

Advisory Wire/Service Bulletin:

• AW300-36-0310 - Bleed Loop Connector Cleaning Tool
• AW300-30-0354 - Potential Piccolo Tube Damage When Replacing a Bleed Loop Element

Forum Articles/Infoservice/Newsletter: None

• LH Wing/Fuse Bleed Loop Schematic and values
• RH Wing/Fuse Bleed Loop Schematic and values
• LH Pylon/Wing Bleed Loop Schematic and values
• RH Pylon/Wing Bleed Loop Schematic and values

Troubleshooting Guide for Bleed Loops

NOTE: If the bleed loop resistance value is within limits, try cleaning the bleed loop connections per AMM 51-25-00-110-801 and then reapply lubrication to the connections per AMM WM 20-20-00. Lubrication part number is called out in each bleed loop installation procedure. Run the aircraft after the cleaning and applying lubing procedure and see if the BLEED LOOP FAULT clears.

1. Interrogate the MDC as follows:

   1. On the cursor control panel, ensure the toggle switch is to the right and select Anti-Ice, ECS and Fuel buttons simultaneously. The MDC main menu should now be displayed on Display Unit #3.
   2. Using the joystick, select Current Faults (if the fault is active) or Aircraft History to research stored faults. From Aircraft History you can then select Fault Message History and locate the fault. Going into advanced diagnostics will provide an equation id for the fault identified.
   3. Select the MDC fault or equation from the drop down below to provide additional information to assist in troubleshooting.
      Select an MDC Fault Code/Message:B3-008099 - SHORT CIRCUIT [L PYLN/WING LOOP]B3-008100 - OPEN CIRCUIT [L PYLN/WING LOOP]B3-008101 - SHORT CIRCUIT [L FUSE/WING LOOP]B3-008102 - OPEN CIRCUIT [L FUSE/WING LOOP]B3-008103 - SHORT CIRCUIT [R FUSE/WING LOOP]B3-008104 - OPEN CIRCUIT [R FUSE/WING LOOP]B3-008105 - SHORT CIRCUIT [R PYLN/WING LOOP]B3-008106 - OPEN CIRCUIT [R PYLN/WING LOOP]