Fuel Panel

Description

The fuel system stores fuel, monitors the quantity and temperature of fuel in each tank, and controls fuel transfers to:

AUTO:
- The standby pump runs automatically, when the associated main pump is failed, or is off.
OFF:
- The standby pump is off.
FAULT:
- The standby pump is running at low pressure or is failed.
- Associated with one of the following ECAM alerts:
  - FUEL FEED TK 1(2)(3)(4) STBY PMP FAULT
  - FUEL FEED TK 1(2)(3)(4) MAIN + STBY PMP FAULT
  - FUEL L(R) WING FEED PMPs FAULT.
- The FAULT light goes off, when the flight crew sets the FEED TK 1(2)(3)(4) STBY pb-sw to OFF.

AUTO:
- The transfer pump runs, if necessary:
  - For an automatic fuel transfer from the inner, mid, or outer tanks, via the forward gallery, or
  - For a manual transfer from the outer tanks, via the forward gallery (except if any outer tank pump has been switched off), or
  - During jettison.
OFF:
- The transfer pump is off.
FAULT:
- Comes on:
  - When the transfer pump is failed, or is abnormally on
    - Associated with one of the following ECAM alerts:
      - FUEL L(R) INR FWD PMP FAULT
      - FUEL L(R) INR FWD+AFT PMPs FAULT
      - FUEL L(R) MID FWD PMP FAULT
      - FUEL L(R) MID FWD+AFT PMPs FAULT
      - FUEL L(R) OUTR PMP FAULT.
  - Or, when the transfer pump must be turned off to allow a manual gravity transfer:
    - Associated with the following ECAM alert:
      - FUEL OUTR TK XFR FAULT
- The FAULT light goes off, when the flight crew sets the L(R) INR(MID)(OUTR) TK FWD pb-sw to OFF.

ON:
- The transfer pump runs, if necessary:
  - For an automatic or manual fuel transfer from the inner, or mid tanks, via the aft gallery, or
  - During jettison.
OFF:
- The transfer pump is off.
FAULT:
- The transfer pump is failed, or is abnormally on, or a low pressure is detected during a manual transfer.
- Associated with one of the following ECAM alerts:
  - FUEL L(R) INR AFT PMP FAULT (Refer to procedure)
  - FUEL L(R) INR FWD+AFT PMPs FAULT (Refer to procedure)
  - FUEL L(R) MID AFT PMP FAULT (Refer to procedure)
  - FUEL L(R) MID FWD+AFT PMPs FAULT (Refer to procedure)
- The FAULT light goes off, when the flight crew sets the L(R) MID(INR) TK AFT pb-sw to OFF.

ON:
- The transfer pump runs, if necessary:
  - For an automatic or manual fuel transfer, or
  - During jettison.
OFF:
- The transfer pump is off.
FAULT:
- Comes on:
  - When the transfer pump is failed, or is abnormally on, or a low pressure is detected during a manual transfer
    - Associated with one of the following ECAM alerts:
      - FUEL TRIM TK L(R) PMP FAULT (Refer to procedure)
      - FUEL TRIM TK L+R PMPs FAULT (Refer to procedure)
      - FUEL TRIM TK XFR FAULT (Refer to procedure)
  - Or, when the trim line is damaged and all trim tank transfers must be inhibited.
    - Associated with the following ECAM alert:
      - FUEL TRIM & APU LINES FAULT (Refer to procedure)
- The FAULT light goes off, when the flight crew sets the TRIM TK L(R) pb-sw to OFF.

AUTO:
- Automatic fuel transfers from the inner (mid)(outer) tanks are available.
- For more information: Refer to Fuel Transfer Sequence
MAN:
- Fuel manually transfers from the inner (mid)(outer) tanks to the feed tanks.
FAULT:
- Comes on:
  - When automatic fuel transfers from the affected tanks are no longer possible.
    - Associated with one of the following ECAM alerts:
      - FUEL MAN XFR PROCEDURE
      - FUEL OUTR TK XFR FAULT
  - Or, when a low level is detected in one or more of the feed tanks.
    - Associated with the following ECAM alerts:
      - FUEL FEED TK 1(2)(3)(4) LEVEL LO
      - FUEL FEED TKs 1+2(3+4) LEVEL LO
      - FUEL ALL FEED TKs LEVEL LO
  - Or, (for the OUTR TK XFR pb-sw only) when a low fuel temperature is detected in the outer tanks.
    - Associated with the following ECAM alert:
      - FUEL TEMP LO
- The FAULT light goes off, when the flight crew sets the INR(MID)(OUTR) TK XFR pb-sw to MAN.

AUTO:
- Automatic fuel transfers from the trim tank are available.
- For more information: Refer to Fuel Transfer Sequence
MAN:
- Fuel manually transfers from the trim tank to the inner tanks.
FAULT:
- Comes on:
  - When an excessive aft CG is detected
    - The Weight and Balance Backup Computer (WBBC) monitors the CG.
    - Associated with the following ECAM alert:
      - FUEL EXCESS AFT CG
  - Or, when the CG has been previously detected at the forward limit, and the trim tank transfer can resume
    - Associated with the following ECAM alert:
      - FUEL CG AT FWD LIMIT
  - Or, when a manual trim tank transfer is required
    - Associated with the following ECAM alert:
      - FUEL TRIM XFR FAULT
      - FUEL MAN XFR PROCEDURE
  - Or, when a low fuel temperature is detected in the trim tank
    - Associated with the following ECAM alert:
      - FUEL TEMP LO
  - Or, when there is a low level of fuel in any feed tank, and there is still some fuel in the trim tank
    - Associated with one of the following ECAM alerts:
      - FUEL FEED TK 1(2)(3)(4) LEVEL LO
      - FUEL FEED TKs 1+2 (3+4) LEVEL LO
      - FUEL ALL FEED TKs LEVEL LO
  - Or, when an overflow of the trim tank is detected.
    - Associated with the following ECAM alert:
      - FUEL TRIM TK OVERFLOW
- The FAULT light goes off, when the flight crew sets the TRIM TK XFR pb-sw to MAN.

AUTO:
- The trim tank transfers are automatic.
ISOL:
- The trim tank forward transfer stops and the trim tank transfer line is isolated.
- The following valves close to isolate the transfer line:
  - The trim tank isolation valve
  - The trim tank inlet valves
  - The trim pipe isolation valves.
OPEN:
- The following valves open, to allow gravity transfer from the trim tank to the inner tanks:
  - Trim tank inlet valves
  - Trim pipe isolation valve connected to the aft gallery
  - Inner tank aft inlet valves.

AUTO:
- All crossfeed valves automatically open:
  - In electrical emergency configuration, while the slats are retracted, or
  - If required for an automatic ground transfer.
ON and OPEN:
- The CROSSFEED 1(2)(3)(4) pb-sw is set to ON and the crossfeed valve is open.
ON:
- The CROSSFEED 1(2)(3)(4) pb-sw is set to ON and the crossfeed valve remains closed.
- Associated with the following ECAM alert:
  - FUEL CROSSFEED VLV 1(2)(3)(4) FAULT (Refer to procedure).
- The OPEN/ON lights go off, when the flight crew deselects the CROSSFEED 1(2)(3)(4) pb-sw.
OPEN:
- The CROSSFEED 1(2)(3)(4) pb-sw is deselected and the crossfeed valve is open.
- If the crossfeed valve is abnormally open, this is associated with the following ECAM alert:
  - FUEL CROSSFEED VLV 1(2)(3)(4) FAULT (Refer to procedure).
- If the crossfeed valve is automatically commanded open (automatic ground transfer or electrical emergency configuration), there is no associated alert.