06/29/21
Message Overview:
Message Name:
HYDRAULIC PRESSURE TRANSDUCERS FAILURE
| Message Code: | 293OBS013 |
| Effectivity: | All |
| System: | Engine Indicating |
| System Description: | 29-30-00 |
| Schematic Diagram: | 29-12-00 [ Global Express ] [ G5000 ] [ Global XRS ] 29-13-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 29-00-03 [ Global Express ] [ G5000 ] [ Global XRS ] |
Message Description:
A pressure transducer failure is sensed. All other possible causes for the hydraulic pressure indication failure are satisfactory. These procedures apply to the Hydraulic System 1, Hydraulic System 2 and Hydraulic System 3 pressure-transducers. Differences are identified.
Possible Causes:
- Hydraulic System 1 Pressure Transducer (MT140)
- Hydraulic System 2 Pressure Transducer (MT143)
- Hydraulic System 3 Pressure Transducer (MT146)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Connect Electrical Power to the Aircraft | AMM 24-00-00-861-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Remove the Electrical Power from the Aircraft | AMM 24-00-00-861-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Opening of Non-Thermal Circuit Breakers | AMM 24-00-00-863-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Closing of Non-Thermal Circuit Breakers | AMM 24-00-00-863-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Electrical/Electronic Safety Precautions | AMM 24-00-00-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Hydraulic Safety Precautions | AMM 29-00-00-910-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Hydraulic Technical Precautions | AMM 29-00-00-910-802 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Hydraulic Pressure Transducers | AMM 29-31-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Hydraulic Pressure Transducers | AMM 29-31-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Safety Precautions - Maintenance Practices - ALL | SPM 20-00-01-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Disconnect the affected hydraulic pressure transducer MT140P1 for Hydraulic System 1 Pressure Transducer, MT143P1 for Hydraulic System 2 Pressure Transducer or MT146P1 for Hydraulic System 3 Pressure Transducer. Perform a continuity check for a short circuit between the pins of the electrical connector on the hydraulic pressure-transducer as follows:
From To Result Electrical Connector-A Electrical Connector-C Electrical Connector-A Electrical Connector-D Electrical Connector-B Electrical Connector-C Electrical Connector-B Electrical Connector-D - If there is continuity, replace the defective hydraulic pressure-transducer and do close out.
- If there is no continuity, continue with next step.
- Perform a voltage check within hydraulic pressure-transducer as follows:
From To Expected Result Result Electrical Connector-A Electrical Connector-B 0.5±0.05 VDC NOTE: Perform this check when the transducer and external temperature is 55 to 91°F (13 to 33°C).
- If voltage is not satisfactory, replace the defective hydraulic pressure transducer and do close out.
- If voltage is satisfactory, continue with next step.
- Do close out.