-keeps the fuel in the main fuel tanks and the center tank, which are open to atmosphere through the vent surge tanks
-controls and supplies the fuel in the correct quantities to the fuel tanks during refuel operations
-
supplies the fuel to the engines
-
supplies the fuel to the Auxiliary Power Unit (APU)
-
supplies the fuel to decrease the temperature of the Integrated Drive Generators
-
gives indications in the cockpit of the usual system operation
-
gives indications in the cockpit of the failures that could cause an unusual condition.
**ON A/C 301-399,
A. Description
The fuel system:
-keeps the fuel in the main fuel tanks and the center (transfer) tank, which are open to atmosphere through the vent surge tanks
-controls and supplies the fuel in the correct quantities to the fuel tanks during refuel operations
-
supplies the fuel to the engines
-
supplies the fuel to the Auxiliary Power Unit (APU)
-controls the movement of the fuel out of the center (transfer) tank
-supplies the fuel to decrease the temperature of the Integrated Drive Generators
-
gives indications in the cockpit of the usual system operation
-
gives indications in the cockpit of the failures that could cause an unusual condition.
1EFF : ALL 1 28-00-00Page 1 1 1 Aug 01/05 1 1 1CES 11EFF : ALL 1 28-00-00Page 2 1 1 Aug 01/05 1 1 1CES 1 **ON A/C ALL
**ON A/C ALL
R 2. Component Location__________________ **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
(Ref. Fig. 001) **ON A/C 301-399,
R (Ref. Fig. 001A) **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
(Ref. Fig. 002) **ON A/C 301-399,
(Ref. Fig. 002A) **ON A/C ALL
R (Ref. Fig. 003) **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299,
R (Ref. Fig. 004) **ON A/C 301-399,
R (Ref. Fig. 004A) **ON A/C 401-499,
R (Ref. Fig. 004B)
(Ref. Fig. 005)
3. System Description__________________
A. Storage (Ref. 28-10-00)
The storage system:
-contains the fuel for the engines and the APU
-helps to protect the fuel system against fire
-gets the warm fuel from the IDGs and returns it to the wing tanks
-keeps the air pressure in the fuel system near to the external air pressure.
(1) Tanks (Ref. 28-11-00)
The fuel is kept in three fuel tanks which are:
-
the LH wing tank
-
the RH wing tank
-
the center tank.
Each wing contains a vent surge tank. The vent surge tanks are
installed outboard of each wing tank.
The vent surge tanks temporarily hold the fuel so that leakage does not occur during:
-
aircraft movement on the ground
-
aircraft rotation at take-off.
All the fuel tanks and the surge tanks have water drain valves at their lowest point.
After a refuel operation to the maximum tank capacity, the fuel can expand 2% (20 deg.C (36 deg.F) temperature increase) without leakage at the refuel attitude and during:
-subsequent towing
-aircraft movement on the ground
-take-off.
(2) Tank Venting System (Ref. 28-12-00) The tank venting system makes sure that the air pressure in the fuel tanks (and the vent surge tanks) keeps near to the external air pressure. The system prevents a large difference between these pressures, which can cause damage to the fuel tank/aircraft structure. This is most important:
-during the refuel or defuel operations
-when the aircraft climbs or descends.
1EFF : ALL 1 28-00-00Page 3 1 1 Aug 01/05R 1 1 1CES 1
Fuel System - Wing and Center Tank Figure 001 (SHEET 1)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-00-00Page 4 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
Fuel System - Wing and Center Tank Figure 001 (SHEET 2)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-00-00Page 5 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
Fuel System - Wing and Center Tank Figure 001 (SHEET 3)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-00-00Page 6 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
Fuel System - Wing and Center Tank Figure 001 (SHEET 4)
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-00-00Page 7 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1
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