DOC AIRBUS | AMM A320FMISCELLANEOUS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
Drains are installed in the rear fuselage structure of the aircraft at or near to the lowest points in an area. The drains let water and condensation drain out so that they do not cause corrosion.
** ON A/C NOT FOR ALL Drains are installed in the rear fuselage structure of the aircraft at or near to the lowest points in an area. The drains let water and condensation drain out so that they do not cause corrosion.
** ON A/C NOT FOR ALL
Rear Fuselage Drains3. Description
The drain valves are installed in the rear fuselage shell. When the cabin pressurizes, the valves, preset to operate when cabin DELTA pressurization reaches 2 psi (0.1378 bar), close to prevent loss of the cabin pressure. As the cabin pressure decreases below the preset value (normally after the aircraft has landed), the valves open (under the spring tension) to allow the water that has collected to drain away. You can remove the drain valves, for inspection or replacement, with an allen key from outside the aircraft.
The drain valves are also installed in the door structure of the aft cargo compartment.
In the other structures (doors, door frames, stringers, brackets and fittings), holes are drilled at the lowest points to make sure that the water and condensation drain to the drain valves.
The drain valves are installed in the rear fuselage shell. When the cabin pressurizes, the valves, preset to operate when cabin DELTA pressurization reaches 2 psi (0.1378 bar), close to prevent loss of the cabin pressure. As the cabin pressure decreases below the preset value (normally after the aircraft has landed), the valves open (under the spring tension) to allow the water that has collected to drain away. You can remove the drain valves, for inspection or replacement, with an allen key from outside the aircraft.
The drain valves are also installed in the door structure of the aft cargo compartment.
In the other structures (doors, door frames, stringers, brackets and fittings), holes are drilled at the lowest points to make sure that the water and condensation drain to the drain valves.