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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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Message Overview:

L FUEL RECIRC ON
(Status)

DDG Reference: 28-24-01
Pilot Action (QRH): STATUS - 3
System Description: 28-26-00
Schematic Diagram: 28-26-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 28-26-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
71-50-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

L FUEL RECIRC ON (Status) shows when the conditions that follow occur:

  • The L RECIRC switch/light on the FUEL control panel is set to ON.
  • The left FRTT shut-off valve is open.
  • The left engine fuel return to tank system is commanded on.
  • The engine fuel flow is not less than 2,000 lb/hr (910 & kg/hr).

This troubleshooting applies when it is not under normal conditions.

NOTE: This troubleshooting sheet is for Global Express 9002 through 9110 not incorporating SB 700-28-034. This troubleshooting sheet is for the aircraft with the manual Fuel Return To Tank (FRTT) system.

Possible Causes:

  • Fuel Management and Quantity Gauging Computer (FMQGC) (A47)
  • Fuel Control Panel (AP5)
  • Ground Stud (GS852)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the FUEL Control Panel AMM 28-20-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the FUEL Control Panel AMM 28-20-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Computer (FMQGC) AMM 28-41-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Computer (FMQGC) AMM 28-41-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair SPM 20-12-10 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

The L FUEL RECIRC ON (Status) CAS does not display when the L RECIRC INHIBIT switch is turned ON.

NOTE: This troubleshooting sheet is for Global Express 9002 through 9110 not incorporating SB 700-28-034. This troubleshooting sheet is for the aircraft with the manual Fuel Return To Tank (FRTT) system.

  1. Gain access to the FMQGC (A47) and remove FMQGC from the tray.
  2. Perform the wiring continuity test per the table below:

    SWITCH POSITION FROM TO EXPECTED RESULT RESULT
    L RECIRC SW DEPRESSED (ON) A47AP1 - J11 Airframe Ground Continuity

    1. If the wiring check is good, go to step 6.
    2. If the wiring check is not good, then continue with next step.

  3. Remove the fuel control panel (AP5), and disconnect AP5P1.
  4. Perform the wiring continuity test per the table below:

    FROM TO EXPECTED RESULT RESULT
    AP5J1 - 26 AP5J1 - 15 Continuity
    AP5P1 - 15 Airframe Ground Continuity

    1. If the wiring from AP5J1 - 26 to AP5J1 - 15 is not good, suspect the L RECIRC Switch (SDS7) or the Fuel Control Panel.
    2. If the wiring from AP5P1 to airframe ground is not good, repair or replace wiring to GS852 or GS852.
    3. If the wiring check is good, continue with the next step.

  5. Perform the wiring continuity test per the table below:

    FROM TO EXPECTED RESULT RESULT
    A47AP1 - J11 AP5P1 - 26 Continuity

    1. If the wiring check is good, continue with the next step.
    2. If the wiring check is not good, repair or replace wiring between the Fuel Control Panel and the FMQGC.

  6. Re-install or re-rack the FMQGC making sure it is fully and properly pushed into place. Is the fault still present?

    1. If the CAS does not display, then go to next step.
    2. If the CAS displays, then do close out.

  7. Suspect the FMQGC (A47).
  8. Do close out.

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