10/03/19
Message Overview:
Fault Message:
L TRA RIGGING FAULT
Fault Code:
7326128LBR
Associated CAS:
| Reporting LRU: | Left Engine Electronic Controller (EEC) |
| System Description: | 76-10-00 |
| Schematic Diagram: | 76-10-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 71-50-01 [ Global Express ] [ G5000 ] [ Global XRS ] 76-10-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
Channel A and B Throttle Resolver Angle (TRA) signals to the Engine Electronic Controller (EEC) agrees but are out of range. These signals are sent by the Rotary Variable Differential Transformer (RVDT) for channel A and the RVDT for channel B. These circuits are continuously monitored by the Full-Authority Digital Engine-Controller (FADEC).
Possible Causes:
- Throttle Quadrant Assembly (AP41)
- Throttle Resolver Angle (TRA)
- Left Engine Electronic Controller (EEC)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
- These signals are sent by two independent Rotary-Variable Differential Transformer (RVDT) for channel A and channel B to the EEC.
- TRA RVDT angles can be read using CAIMS, System Diagnostic, LRU Test, Throttle Quadrant Data page.
Quick Links:
| 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 Throttle Quadrant | AMM 76-10-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Throttle Quadrant | AMM 76-10-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Operational Test of the Throttle Quadrant | AMM 76-10-01-710-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Eng Electronic Controller (EEC) Mod 73-101559 |
EMM 73-21-01-000-801-B00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Eng Electronic Controller (EEC) Mod 73-101559 |
EMM 73-21-01-400-801-B001 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Perform an operational test of the interface between the throttle quadrant and the Left EEC. Check CH A and CH B TRA RVDT values for discrepancies. Are the TRA values for channel A and channel B correct?
- If YES, do close out.
- If NO, adjust the throttles to get the correct TRA values for channel A and channel B and continue with next step.
- Perform the operational test of the interface between the throttle quadrant and the Left EEC again.
- If the system checks are good, do close out.
- If the fault remains, continue with next step.
- For TRA RVDT CH A, perform a wiring checks between connector Throttle Quadrant Assembly (AP41P2) and Left EEC (P1046).
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- For TRA RVDT CH B, perform a wiring checks between connector Throttle Quadrant Assembly (AP41P3) and Left EEC (P1048).
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Swap Left EEC with Right EEC.
- If the system checks are good, replace left EEC and do close out.
- If the fault remains, continue with next step.
- Replace TRA.
- Do close out.