03/03/21
Message Overview:
Message Description:
Both channels of the Right Outboard Wing Leading-Edge Temperature Sensor are detected failed, or a disagreement between both channels is detected.
Possible Causes:
- Right Outboard Temperature Sensor (MT34)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Removal of the Integrated Air System (IAS) Controller | AMM 21-31-01-000-801 |
| Installation of the Integrated Air System (IAS) Controller | AMM 21-31-01-400-801 |
| Operational Test of the Leading-Edge Temperature Sensors | AMM 30-11-00-710-801 |
| Removal of the Outboard Leading-Edge Temperature Sensor | AMM 30-11-03-000-801 |
| Installationof the Outboard Leading-Edge Temperature Sensor | AMM 30-11-03-400-801 |
| Wiring - Maintenance Practices - ALL | SPM 20-12-00-02 |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 |
Troubleshooting Recommendations:
- Perform Operational Test of the Leading-Edge Temperature Sensors.
- If the test is satisfactory, do close out.
- If the test is not satisfactory, continue with next step.
- Do wiring check between the Left IASC (A55) and the Right Outboard Temp Sensor (MT34).
From To Results Conn. A55P3 - 3 Splice SP68 Conn. A55P3 - 14 Splice SP69 - If the check is satisfactory, continue with next step.
- If the check is not satisfactory, repair defective wire.
- Do wiring check between the Right IASC (A56) and the Right Outboard Temp Sensor (MT34).
From To Results Conn. A56P3 - 3 Splice SP73 Conn. A56P3 - 14 Splice SP74 - If the check is satisfactory, continue with next step.
- If the check is not satisfactory, repair defective wire.
- Replace Right Outboard Temp Sensor (MT34).
- Do close out.