Fuel Flashcards
WHERE IS THE REFUEL/DEFUEL PANEL?
RH MAIN LANDING GEAR FAIRING
WHAT POWER SOURCE SUPPLIES THE REFUEL/DEFUEL PANEL?
DC GROUND HANDLING TRANSFER BUS
WITH THE BAT SWITCH OFF AND NO EXTERNAL POWER, WHAT IS REQUIRED TO POWER THE
REFUEL/DEFUEL SYSTEM?
OPEN THE REFUEL/DEFUEL DOOR
REFUEL/DEFUEL SYSTEM:
IN CASE OF FQI FAILURE DETECTION, THE HIGH LEVEL IS ACHIEVED BY A LEVEL SENSOR
INSTALLED AT THE BOTTOM OF EACH SURGE TANK
B) THE WING TANKS CAN ALSO BE REFUELLED BY GRAVITY
C) THE SYSTEM MAY BE USED TO DEFUEL THE A/C BY APPLYING A 0.77 BAR (11 PSI)
SUCTION TO THE CONNECTOR AND OPENING THE TANK REFUEL VALVES
WITH THE REFUEL/DEFUEL PANEL MODE SELECTOR SWITCH AT REFUEL POSITION, HOW ARE
THE REFUEL VALVES OPERATED?
BOTH OF THESE ANSWERS ARE POSSIBLE
BY AUTOMATIC LOGIC IF THE REFUEL VALVES SWITCHES ARE SET ON NORM
BY MANUAL SELECTION OF THE REFUEL VALVE SWITCHES TO OPEN OR SHUT
WHEN THE REFUEL/DEFUEL PANEL “FQI TEST” PB IS DEPRESSED, WHAT ARE THE CORRECT
INDICATIONS?
DISPLAY ALL 8 ON THE REFUEL/DEFUEL PANEL AND COCKPIT FUEL QUANTITY GAUGES
BLUE LH AND RH REFUEL VALVES SHUT DOWN PLUS FWS IS ACTIVATED
FUEL QUANTITY INDICATING SYSTEM:
THE LEFT AND RIGHT FUEL QUANTITY INDICATED CHANNELS ARE INDEPENDENT
IN A LEVEL ATTITUDE (WITHIN -3° AND +1° OF PITCH AND +/-2° OF ROLL), THE
ACCURACY OF THE 5 PROBES FUEL QUANTITY INDICATING SYSTEM IN EACH TANK IS +/- 1% NEAR ZERO, +/-3% AT FULL
HOW MANY MAGNETIC LEVEL INDICATORS ARE LOCATED ON THE BOTTOM OF EACH FUEL
TANK?
TWO
FUEL QUANTITY INDICATORS DISPLAY:
FUEL MASS REMAINING ON BOARD
THE ELECTRICAL PUMP AND THE JET PUMP ARE LOCATED:
BOTH IN A FEEDER DEPARTMENT, TO AVOID UNCOVERING THE PUMPS IN CASE OF
VERTICAL OR LATERAL LOADS
ENGINE FEED DESCRIPTION:
NEITHER THE ELECTRICAL PUMP NOR THE JET PUMP CAN CIRCULATE FUEL IN REVERSE DIRECTION THROUGH THE OTHER
EXCESS FLOW (FUEL NOT ABLE TO FLOW THROUGH THE LP VALVE TOWARDS THE HMU)
FROM EITHER THE ELECTRICAL PUMP OR JET PUMP, RETURNS TO AN INLET SUPPLYING
THE FEEDER COMPARTMENT INSURING THAT IT IS ALWAYS FULL
IN NORMAL OPERATION, THE ELECTRICAL PUMP IN EACH TANK IS USED ONLY TO:
START THE ENGINE, WHICH PRESSURISES THE JET PUMP VIA THE HMU HP FUEL PUMP
FOR SUBSEQUENT PRESSURISATION OF THE FUEL SYSTEM
THE TWO FUEL PUMP PBs CONTROL WHICH OF THE FOLLOWING?
AUTOMATIC STARTING AND STOPPING FUNCTION OF THE RELATED ELECTRICAL PUMP
WHEN SELECTED IN (DEPRESSED)
CLOSURE OF THE RELATED MOTIVE FLOW VALVE, THUS SHUT-OFF OF THE RELATED JET
PUMP WHEN SELECTED OFF (RELEASED)
THE ELECTRICAL PUMP NORMALLY RUNS ANYTIME THE RELATED PUMP PB IS IN
(DEPRESSED) AND:
RETURN PRESSURE FROM THE HMU IS BELOW 5 PSI (500MB)
DURING CROSS-FEED OPERATION, X FEED PB IN (DEPRESSED)
WHEN DOES THE “MOTIVE FLOW VALVE” OPEN?
ANYTIME THE RELATED PUMP PB IS IN (DEPRESSED), AND PRESSURE FROM THE HMU IS
SUFFICIENT TO OPEN IT
JET PUMP IS ACTIVATED BY:
HP FUEL FROM ENGINE HMU
IN THE WHOLE FLIGHT ENVELOPE, HOW MANY ENGINES CAN ONLY ONE ELECTRIC FUEL
PUMP SUPPLY?
ONLY ONE
THE FUEL TANK MAXIMUM CAPACITY IS:
2868 LT (758 US GAL) PER TANK, 5736 LT (1516 US GAL) TOTAL
2250KG (4960 LB) PER TANK, 4500KG (9920 LB) TOTAL (0.785)
A JET PUMP FAILURE IS DETECTED BY:
ILLUMINATION OF RUN GREEN LIGHT IN THE RELATED ELECTRICAL FUEL PUMP PB
ENGINE RUNNING, THE ILLUMINATED LIGHT “FEED LO PR” ASSOCIATED WITH FWS
ACTIVATION CAN MEAN:
PRESSURE DROPS BELOW 5 PSI OR FUEL STARVATION
TO FEED ENGINE 1 WITH TANK 2, LH AND RH FUEL PUMPS RUNNING, YOU MUST:
OPEN THE CROSS-FEED VALVE AND SELECT ENGINE 1 FUEL PUMP PB OFF
DURING CROSS-FEED OPERATION, HOW MANY PUMPS ARE RUNNING?
TWO, ELECT AND JET PUMP PUMPS ON THE SIDE WITH THE MOST FUEL
IF NO GREEN “FLOW BAR” IS VISIBLE IN THE “X-FEED” PB, WHAT DOES IT MEAN?
CROSS-FEED VALVE IS IN TRANSIT, OR A FAULT EXISTS
HOW IS THE “LP VALVE” AT THE OUTLET OF EACH TANK CONTROLLED?
ELECTRICALLY BY THE RELATED FIRE HANDLE (DC BUS 1 OR 2 FOR THE MOTOR 1, DC EMER BUS OR HOT EMER BAT BUS FOR THE MOTOR 2)
“LO LVL” AMBER LIGHT AND FWS ACTIVATION MEANS THAT:
FUEL QUANTITY BECOMES LOWER THAN 160KG AND THE CORRESPONDING ELECTRIC
PUMP RUNS AUTOMATICALLY
