CHAPTER 38 Flashcards
Where is the location of the potable water tank?
Aft of the forward cargo compartment.
How is the waste water system drains the used water from the lavatory washbasins and the galley sinks stored on the aircraft?
The waste water system drains the used water from the lavatory
washbasins and the galley sinks. The waste water is discarded overboard outside through the drain valve and the drain mast.
Where is the waste tank quantity indicated?
The FAP displays the waste tank quantity stored in the waste holding tank when the Water/Waste key on the FAP is selected.
How is the toilet flushed when the waste holding tank is full?
When the waste holding tank is full, a signal is sent to the CIDS, which shuts down the toilet systems.
The Potable water service panel door has a microswitch fitted. What is the purpose of the microswitch?
The door microswitch isolates the indicating system when the potable water service panel is closed. When the door is open, the electric motor of the compressor is stopped (if installed). The water and waste page on the FAP will be shown automatically as soon as the service panel door opened.
Pressurization of the potable water system enables water supply from the tank to the necessary service location. How is the system pressurized?
Compressed air is tapped from the cross feed line of the engine or APU bleed air. On ground, when the bleed air system is not available, the ground air pressure supply system is used. If installed, the air compressor will supply air when bleed is not available.
With aircraft on the ground what happens when the toilet service panel door is opened?
The Cabin Intercommunication Data System (CIDS) stops all toilet operations through the Decoder/Encoder Unit (DEU) B and flush signals are inhibited.
