NIVEL RNG MRO B787-2026 ATA 49

What indication occurs when the pressure in the APU fire extinguishing bottle is low?. a) EICAS messages and indicator lights. b) Master caution light. c) Master warning light. d) Fire bell aural warning.

Where is the remote APU FIRE SHUTDOWN switch located?. a) On the P40 panel on the NLG strut. b) On the flight deck. c) On the cargo fire/engine control panel. d) On the APU compartment.

What action is required to arm the APU BOTTLE DISCHARGE switch?. a) Pushing in the APU FIRE SHUTDOWN switch. b) Pulling the fire switch out. c) Turning the fire switch left or right. d) Pushing the FIRE/OVHT TEST switch.

How is the APU fire extinguishing bottle discharged manually?. a) By turning the fire switch left or right. b) By pressing the FIRE/OVHT TEST switch. c) By pulling the APU FIRE SHUTDOWN switch. d) By pushing the APU FIRE SHUTDOWN switch.

Where is the APU compartment located in the aircraft?. a) In the aft fuselage. b) In the nose cone. c) In the wings. d) In the main cabin.

What are the APU flight deck controls?. a) APU selector, APU maintenance switch, APU fire switch. b) Engine start switch, Engine shutdown switch, APU fire switch. c) APU start button, APU stop button, APU reset button. d) Engine control switch, Engine reset switch, APU fire switch.

What components make up the APU oil indicating system?. a) APU oil level sensor, APU oil temperature sensor. b) APU oil level sight glass. c) A and B are correct. d) Gearbox pump.

Which interface does the APU oil level sensor communicate with?. a) Gearbox sump. b) APU controller (APUC). c) APU oil level sight glass. d) APU oil temperature sensor.

What is the function of the oil temperature sensor in the APU oil indicating system?. a) It measures the level of the oil. b) It shows the oil level. c) It senses the temperature of the oil. d) It provides an indication of the oil quantity to maintenance personnel.

What is the function of the duplex fuel nozzles in the APU fuel system?. a) To supply fuel for APU start and continued operation. b) To control the fuel flow from the fuel module. c) To filter the fuel before it enters the fuel module. d) To provide electrical power to the APU fuel system.