Repaso Semana 2 ATA 38

What does ATA stand for in the context of this training manual?. Aircraft Technical Association. Aviation Training Authority. Air Transport Association.

What does CSCP/CACP refer to in the water quantity indication system?. Cabin System Control Panel / Cabin Attendant Control Panel. Cargo System Control Panel / Cargo Attendant Control Panel. Central System Control Processor / Cabin Air Control Panel.

What does SB stand for when referring to modifications such as SB 777-38-0009?. System Bulletin. Structural Bulletin. Service Bulletin.

What does CMS stand for in the water quantity indication system (pre SB 777-23-0207)?. Cabin Management System. Crew Management System. Central Monitoring Station.

What does CSS stand for (post SB 777-23-0207)?. Cabin Services System. Central Service Station. Cabin Safety System.

What does 'potable water' mean in the context of ATA 38?. Water used only for toilet flushing. Water that is safe for drinking and human consumption. Gray water collected from sinks.

What is 'gray water' in the waste disposal system?. Toilet waste stored in the waste tanks. Waste water from sinks, galleys, and drinking fountains. Condensate from the air conditioning system.

What is the primary purpose of the potable water system?. To collect and store toilet waste. To supply potable water to the lavatories and galleys. To pressurize the cabin air system.

How many potable water tanks are installed on a B777-200?. One. Three. Two.

How many potable water tanks are installed on a B777-200ER or B777-300/300ER?. One. Three. Two.

How are the potable water tanks typically pressurized?. By cabin differential pressure. By electric water pumps only. By the pneumatic system or a dedicated compressor.

What are the main subsystems of the waste disposal system?. Gray water drain system, Vacuum waste system. Water cooling, Water heating, Water quantity indication. Storage and distribution, Pressurization, Indication.

How does the vacuum waste system move toilet waste into the waste tanks?. By high-pressure air injection. By gravity flow only. By a vacuum.

Where are the waste tanks located?. In the forward cargo compartment. In the bulk cargo compartment. Above the ceiling in the passenger compartment.

From which panel are the water tanks filled?. Forward potable water drain panel. Left wing service panel. Aft potable water service panel.

What is the capacity of each water tank on a B777-200/200ER? A) 3 B) , limited by standpipe to 109 gallons (413 liters) C). 45 gallons (170 liters). 200 gallons (757 liters). 120 gallons (454 liters).

What is the standpipe limit for each water tank on a B777-300 ER?. 109 gallons (413 liters). 120 gallons (454 liters). 115 gallons (435 liters).

Where are the potable water tanks located?. Above the passenger cabin ceiling. Forward of the forward cargo compartment. Aft of the bulk cargo compartment end wall.

What is the purpose of the isolation/drain valve?. To pressurize the water tanks. To heat the water in the distribution lines. To isolate parts of the system and drain the forward.

Where is the isolation/drain valve located?. On the aft service panel. In the bulk cargo compartment. Above the ceiling.

What are the three main drain valves for the distribution system and tanks?. Lavatory drain valve, Galley drain valve, Overflow valve. Forward system drain valve, Aft system drain valve, Tank drain valve. Preselect valve, Isolation valve, Pressure relief valve.

Where is the aft potable water service panel located?. On the nose landing gear bay. On the right side between. On the left side between the forward cargo door and wing.

What safety feature prevents the forward drain panel door from closing if the drain valve is not in the correct position for flight?. A hydraulic lock. An electrical interlock switch. A bracket on the door.

Which components are typically found behind the door below the lavatory sink?. Vacuum blower and waste tank. Water tank and compressor. Water heater, water filter.

Where is the potable water shutoff valve located in a typical lavatory?. On the aft service panel. Behind the mirror. Under the sink next to the drain valve.

What is the purpose of the water tank support shear fitting?. To heat the water in the tank. To measure the water quantity. To hold the water tank.

Approximately how high above the ground is the aft potable water service panel?. 4 to 5 feet (1.2 to 1.5 meters). 15 to 16 feet (4.6 to 4.9 meters). 9.5 to 10.3 feet (2.9 to 3.1 meters).

What is the capacity of a typical lavatory water heater?. 5.0 quarts (4.73 L). 2.0 quarts (1.89 L). 1.0 quart (0.95 L).

What are the approximate temperature settings available on the water heater temperature selector?. Low 90°F (32.22°C)/ Medium 100°F (37.77°C)/ High 110°F (43.73°C). Low 105°F (40.6°C) / Medium 115°F (46°C)/ High 125°F (51.7°C). Low 120°F (48.9°C)/ Medium 140°F (60°C)/ High 160°F (71.11°C).

At approximately what temperature does the overheat switch open (latch open)?. 140°F (60°C). 170°F (76.7°C). 120°F (48.9°C).

When can the overheat switch be manually reset?. Only after replacing the heater elemen. Immediately at any temperature. Only when the tank temperature is less than 120°F (48.9°C).

What important training point must be observed when draining the potable water system?. Leave the water heaters powered ON to dry the tanks. Set all temperature selectors to HIGH. Remove power from the water heaters to prevent an overheat condition.

At what approximate pressure does the water heater pressure relief valve open?. 140 psi. 100 psi. 55 psi.

What are the two main functions of the water quantity indication system?. Heat the water and cool the water. Show the water quantity in the tanks. Drain gray water and create vacuum for toilets.

How many positions does the water quantity preselect switch have?. 4 positions. 6 positions. 8 positions.

Where is the water quantity preselect switch located?. Behind the lavatory mirror. On the flight deck overhead panel. On the aft potable water service panel.

What happens when the tank quantity reaches the preselected quantity during filling?. An alarm sounds in the cockpit. The water pumps automatically stop. The summation unit causes the preselect circuit.

Where is the water quantity summation unit located?. On the flight deck. Inside each water tank. Aft of the bulk cargo compartment.

How many water quantity transmitters are installed on a B777-200?. One. Two. Three.

What supplies water to the lavatories and galleys from the tanks?. The vacuum waste lines. The overhead distribution line. The gray water drain lines.

On which side of the airplane are the forward drain panel and aft service panel located?. Left side. Both sides symmetrically. Right side.

What is the purpose of the preselect overflow valve during filling?. To heat the incoming water. To drain gray water. To allow controlled filling of the tanks.

Which of the following is NOT a subsystem of the potable water system on the standard B777-200/300?. Storage and distribution. Bidet system. Water tank pressurization.

What does the water tank standpipe prevent?. Loss of pressurization. Freezing of the water. Overfill of the tank beyond a safe level.

Approximately how long does it take for a water heater to reheat water to the set temperature after the tank is emptied?. Approximately 2 minutes. Approximately 15 minutes. Approximately 5 minutes.