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fuel tank quantity decreasing faster than the other, and or slowly increasing lateral trim force.
If fuel leakage is visible from wing tank, proceed to step 13.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 4
EMERGENCY
PROCEDURES
4-42 FAA APPROVED
11 October 2002
If fuel leakage is not visible from wing tank, it must be determined if the fuel leak is coming
from the wing tank or from the engine/engine feed system. Descend to 15,000 feet and proceed
as follows:
WARNING: THIS PROCEDURE MAY RESULT IN ENGINE FAILURE. TERRAIN
CLEARANCE AND AIRPLANE SINGLE ENGINE PERFORMANCE
MUST BE TAKEN INTO CONSIDERATION.
Prepare airplane for possible engine failure but do not shut down the engine. Refer to Section
4-10-10: Engine Failure/Shutdown In Flight.
4. Engine Failure/Shutdown In Flight, Steps 1 thru 3 .............................................COMPLETE
NOTE: APU is fed by the boost pump manifold on the left wing tank only. If boost pumps on
left side are turned off, APU performance may be erratic, and or not meet maximum
altitude starting performance.
5. AFFECTED SIDE, MAIN & ALT BOOST PUMPS .......................................................OFF
Wait two minutes. If the engine continues to run, the leak should be assumed to be in the
affected side wing fuel tank, proceed to step 13. If the engine fails, runs erratically or continues
to run with extremely high fuel flow or “dashed” fuel flow indications, the leak should be
assumed to be in the fuel feed system somewhere between the boost pumps and the engine,
proceed to step 6.
6. AFFECTED ENGINE HP FUEL COCK.......................................................................SHUT
7. AFFECTED ENGINE FIRE HANDLE (do not rotate) ................................................. PULL
8. Engine Failure/Shutdown In Flight Checklist (steps 5 and sub) .........................COMPLETE
WARNING: DO NOT RESTART FAILED ENGINE AS A HIGH PROBABILITY OF
ENGINE FIRE EXISTS.
9. FAILED SIDE MAIN AND ALT BOOST PUMPS.................................RECONFIRM OFF
10. FUEL CROSSFLOW VALVE......................................................... RECONFIRM CLOSED
11. FUEL INTERTANK VALVE........................................................................AS REQUIRED
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 4
EMERGENCY
PROCEDURES
FAA APPROVED 4-43
11 October 2002
Balance fuel by using the intertank valve and establishing a small sideslip (approximately ½
trapezoid or ball width). Move the rudder trim arrow in the direction of the tank from which you
desire to transfer fuel. This will create a slight wing down condition toward the tank to which
you desire to transfer fuel.
12. Nearest Suitable Airport................................................................................................ LAND
Refer to Section 4-10-40: One (1) Engine Inoperative Landing Procedure, if required.
FUEL TANK LEAK:
13. AFFECTED SIDE MAIN & ALT BOOST PUMPS ......................................................... ON
Crew must now evaluate the fuel loss rate and distance to nearest suitable landing airfield.
Consideration should be given but is not limited to the following: two engine vs. single engine
climb to altitude in order to achieve greater range, maximum transfer of fuel to good tank vs.
lateral controllability, and affected side engine failure due to fuel starvation.
NOTE: Up to 4000 lbs. of fuel imbalance between tanks while in flight has been safely
demonstrated in flight under abnormal conditions. For approach and landing with
abnormal fuel imbalance and an engine shut down, be prepared to use full rudder and
aileron as necessary.
14. FUEL CROSSFLOW & INTERTANK VALVE...........................................AS REQUIRED
WARNING: IF INTERTANK VALVE IS USED FOR MAXIMUM FUEL TRANSFER
RATES, ENSURE PROPER SIDESLIP IS MAINTAINED TO PREVENT
FUEL FROM FLOWING BACK INTO LEAKING TANK.
15. FUEL TRANSFER TO GOOD SIDE.......................................... INITIATE AS REQUIRED
16. AUTOPILOT...................................................................................................DISCONNECT
17. AIRSPEED...................................AS REQUIRED TO MAINTAIN LATERAL CONTROL
CAUTION: IF IT BECOMES APPARENT THAT PRIOR TO LANDING ENGINE ON
LEAKING SIDE WILL FAIL DUE TO FUEL STARVATION, SHUTDOWN
ENGINE. (REFER TO SECTION 4-10-10: ENGINE FAILURE/SHUTDOWN IN
FLIGHT.) OBSERVE AFM MAXIMUM FUEL IMBALANCE LIMITS
PRIOR TO LANDING.
18. Nearest Suitable Airport................................................................................................ LAND
Refer to Section 4-10-40: One (1) Engine Inoperative Landing Procedure, if required.
　
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