06/22/19
Message Overview:
Fault Message:
PUSHER/WRG/SPC CH B
Fault Code:
2731205STL
Associated CAS:
| Reporting LRU: | Stall Protection Computer (SPC) |
| System Description: | 27-32-00 |
| Schematic Diagram: | 27-32-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 27-32-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
When Stall Protection Computer (SPC) senses a Pusher Actuator failure during continuous BIT or PAT - one of the faults that follow occurs:
- The SPC receives a pusher failure discrete
- The SPC receives a pusher error indication that only SPC Channel B has the stick push discrete active
Possible Causes:
- Copilot Pusher Disconnect
- Pusher Capstan
- Pusher Actuator
- Stall Protection Computer (SPC) Channel B
- Stall Protection Computer (SPC) (A40)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin:
- AW700-27-0363 - No Fault Found initiative: Stall Protection Computer
- 700-27-025 (Global) - MODIFICATION - STALL PROTECTION SYSTEM - DISABLE STICK PUSHER CANCEL FUNCTION FROM AUTOPILOT MASTER DISCONNECT SWITCH FOR JAA AIRCRAFT
- 700_1A11_27_004 (Global 5000) - MODIFICATION - STALL PROTECTION SYSTEM - DISABLE STICK PUSHER CANCEL FUNCTION FROM AUTOPILOT MASTER DISCONNECT SWITCH FOR JAA AIRCRAFT
Forum Articles/Infoservice/Newsletter: None
Quick Links:
| Removal of the Master Disconnect Switches | AMM 22-12-17-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Master Disconnect Switches | AMM 22-12-17-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Stall Protection Computer | AMM 27-32-01-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Stall Protection Computer | AMM 27-32-01-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Stick Pusher Actuator | AMM 27-32-17-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Stick Pusher Actuator | AMM 27-32-17-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the Stick Pusher Capstan | AMM 27-32-21-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the Stick Pusher Capstan | AMM 27-32-21-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Swap Copilot Master Disconnect Switch.
- If system checks are good, replace the defective Copilot Master Disconnect Switch and do close out.
- If fault remains, continue with next step.
- Perform wiring checks between Copilot Master Disconnect Switch, Pusher and SPC.
- If wiring checks are not good, repair defective wiring as required and do close out.
- If wiring checks are good, continue with next step.
- Replace Stick Pusher Actuator.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace Stick Pusher Capstan.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Replace Stall Protection Computer (SPC).
- Do close out.