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AVOID NEGATIVE G FACTOR
* DETERMINE GRAVITY FEED CEILING :
Depending on when the fuel pumps have failed, the flight altitude must be limited to the following value :
Flight conditions at the time
of gravity feeding
Gravity feed ceiling
Flight time above FL300 greater
than 30 minutes
(Fuel deaerated)
Current FL*
Flight time above FL300 lower
than 30 minutes
(Fuel non deaerated)
FL 300*
Aircraft flight level never
exceeded FL300
(Fuel non deaerated)
FL150* or
7000 ft above takeoff airport
whichever is higher
* For JET B, gravity feed ceiling is FL100 in all cases. DESCEND TO GRVTY FEED CEILING (if applicable).
* WHEN REACHING GRVTY FEED CEILING :
— FUEL X FEED   OFF
* IF NO FUEL LEAK AND FOR AIRCRAFT HANDLING :
If no fuel leak and for flight with only one engine running, this engine being fed by gravity, the following applies.
— FUEL X FEED   ON
— BANK ANGLE . . 1 DEG WING DOWN ON LIVE ENGINE SIDE
— RUDDER TRIM   USE
* WHEN FUEL IMBALANCE REACHES 1 000 kg (2200 lbs) :
— BANK ANGLE   2 or 3 DEG WING DOWN
ON LIVE ENG SIDE— FOB   CHECK
Compare the FOB+FU with the FOB at departure. If the difference is significant, or if the FOB+FU decreases, suspect a fuel leak.
CAUTION  
A fuel imbalance may be indicate a fuel leak.
Do not apply this procedure, if a fuel leak is suspected. Refer to the FUEL LEAK procedure.
— FUEL X FEED   ON
* On the lighter side and in the center tank :
— FUEL PUMPS   OFF
* When fuel is balanced :
— FUEL PUMPS (WING + CTR)   ON
— FUEL X FEED   OFF

A319/A320/A321
oniatTri
ABNORMAL PROCEDURES
REV 36
2.09

SEQ 001
A fuel leak may either be detected by :
. The fact that the sum of the FOB and the F USED is significantly less than the FOB at departure or decreases, or
. Passenger observation (fuel spray from engine or wing tip), or
. Total fuel quantity decreasing at an abnormal rate, or
. A fuel imbalance, or
. A tank emptying too fast (leak from engine, or a hole in a tank), or
. A tank overflowing (due to a pipe rupture in a tank), or
. An excessive fuel flow, (leak from engine), or
. A fuel smell in the cabin
If visibility permits, a visual check from the cabin may permit to identify the source of the leak.
WHEN A LEAK IS CONFIRMED
LAND ASAP
* LEAK FROM ENGINE :
* THR LEVER (of affected engine)   IDLE
* ENG MASTER (of affected engine)   OFF
* FUEL X FEED   USE AS RQRD
The crossfeed valve can now be selected open for re-balancing, or to allow use of the fuel from both wings. Do not restart the engine.
* LEAK NOT FROM ENGINE or LEAK NOT LOCATED
* FUEL X FEED   MAINTAIN CLOSED
The crossfeed valve must remain closed to prevent the leak from affecting both sides.
* DESCEND TO GRVTY FUEL FEEDING CEILING (FL 100 IF JET B) See the GRVTY FUEL FEEDING procedure.
* ENG MODE SEL   IGN
* ALL TK PUMPS (when gravity ceiling is reached)   OFF
In almost all cases, switching the pumps off will prevent any further loss of fuel. All pumps must be switched off, even if the leak is from one wing only, as there are some failures on one side that will result in fuel loss from the other side.
* AVOID NEGATIVE G FACTOR
CAUTION
Do not open the WING X-FEED, even if requested by another ECAM procedure.
Do not apply the fuel IMBALANCE procedure :
Even with a fuel imbalance of one wing full/one wing empty, there is no special procedure required for approach and landing
• If one engine flames out when there is still fuel in the feeding tank :
* LEAK FROM ENGINE proc   APPLY
* ALL TK PUMPS   ON
NOTE : The flameout is due to air suction from a leak from the engine.
I FOR LANDING
CAUTION  
Notify the ATC, and do not use reverse.A319/A320/A321
oniatTri
ABNORMAL PROCEDURES
REV 34
2. 10

SEQ 001
* If icing conditions cannot be avoided :
* One of affected ADRs   OFF
F/CTL ADR DISAGREE
* AFFECTED DU IS BLANK or DISPLAY IS DISTORTED :
* DU (affected)   AS RQRD
The DU can be switched off.
* ECAM/ND XFR (if ECAM DUs affected)   USE
Transfer SD to the F/O or CAPT ND.
* PFD/ND XFR (if EFIS DUs affected)   USE
* DIAGONAL LINE ON THE AFFECTED DU :
* EIS DMC SWITCHING   AS RQRD
* IF UNSUCCESSFUL : - DU (affected)   OFF THEN ON
NOTE: ND display may disappear, in case too many waypoints and associated information are displayed. Reduce the range, or deselect WPT or CSTR, and the display will automatically recover after about 30 seconds.
　
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