07/02/19
Message Overview:
Fault Message:
DISCRETE INTERFACE ERROR #1/2/3
Fault Code:
2751048STD
Associated CAS:
| Reporting LRU: | Slat/Flap Control Unit (SFCU) |
| System Description: | 27-51-00 |
| Schematic Diagram: | 27-50-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 27-50-07 [ Global Express ] [ G5000 ] [ Global XRS ] 27-50-08 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
One or more of the discrete outputs from the Slat/Flap Control Unit (SFCU) that follow are defective:
- MOVING
- MOVING 2
- FLAPS NOT ZERO
Possible Causes:
- Slat/Flap Control Unit (SFCU) 1 (A124)
- Slat/Flap Control Unit (SFCU) 2 (A95)
- Flight Control Unit (FCU) 1 (A65)
- Flight Control Unit (FCU) 2 (A66)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| 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 ] |
| Operational Test of the Slat/Flap Control System | AMM 27-51-00-710-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Slat/Flap Control Unit (SFCU) | AMM 27-51-05-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Slat/Flap Control Unit (SFCU) | AMM 27-51-05-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Electronic Rigging of the Slat/Flap Control Unit (SFCU) | AMM 27-51-05-820-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the External Avionics-Compartment Access-Panel (140BB) | AMM 52-45-11-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the External Avionics-Compartment Access-Panel (140BB) | AMM 52-45-11-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Torquing Procedures - System Description | SPM 20-20-00-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Swap SFCU 1 with SFCU 2.
- If system checks are good, replace SFC 1 and do close out.
- If fault remains, continue with next step.
- Perform the rigging of the slat/flap control system. Set the selection to a new detent position on the slat/flap control handle and move the system to the new position.
- If the fault occurs again on the same channel, continue with this procedure.
- If the fault occurs on the opposite channel, the fault has moved with the controller. Replace the defective SFCU and do close out.
NOTE: SFCU 1 is the left side (channel 1) controller. SFCU 2 is the right side (channel 2) controller.
- Disconnect the connectors A124AP1 for the SFCU 1 (A124), A95AP1 for the SFCU 2 (A95), A65FP1 for the FLIGHT CONTROL UNIT 1 (A65), A66FP1 for the FLIGHT CONTROL UNIT 2 (A66), A63P1 and A63P2 for the D.C. POWER CENTRE (A63). Perform a continuity check as follows:
For the SFCU1:From To Result A124AP1-94 A65FP1-1 A124AP1-16 A63P1-M A124AP1-15 A79P1-EE For the SFCU2:
From To Result A95AP1-94 A66FP1-1 A95AP1-16 A63P2-k A95AP1-15 A79P1-FF - If there is continuity, continue with next step.
- If there is no continuity, repair defective wiring as required and do close out.
- Perform a continuity check as follows:
For the SFCU1:From To Result A124AP1-94 Ground A124AP1-16 Ground For the SFCU2:
From To Result A95AP1-94 Ground A95AP1-16 Ground - If there is continuity, repair defective wiring as required and do close out.
- If there is no continuity, continue with next step.
- Replace the defected FCU.
- Do close out.