B767 HYDRAULICS, PNEUMATICS

Why are the L and R isolation valves normally closed for flight? (CBT, Bleed Air Operation). A.- To prevent backflow through the APU. B.- To prevent a duct leak in the crossover manifold. C.- To prevent excessive bleed air flow from one engine.

Which isolation valve must be open to allow the flow of APU bleed air into the manifold prior to engine start? (CBT, Bleed Air Operation). A.- L ISLN. B.- C ISLN. C.- R ISLN.

What will cause automatic closure of the apu bleed air valve? (CBT, Bleed Air Operation). A.- Turning the center isolation switch off. B.- Turning an engine bleed air switch off. C.- After the second engine reach idle.

What does the Bleed light Illuminated (Amber) indicate? (FCOM, 2.10.11). A.- Engine low pressure valve open. B.- The engine high pressure bleed air valve and/or pressure regulating valves are open when they should be closed. C.- Engine bleed air overtemperature.

What does it mean when the isolation valve light comes on? (FCOM, 2.10.10). A.- Isolation valve position disagrees with commanded position. B.- The valve is open. C.- The valve is colsed.

What causes an Engine Bleed Air Overheat (OVHT) Lights illuminated (amber)? (FCOM, 2.10.11). A.- High temperature in the center pneumatic duct. B.- Engine bleed air over temperature, engine bleed valves automatically closed. C.- High temperatures around the forward cargo compartment.

The BLEED light illuminates and the EICAS advisory message L or R ENG HPSOV displays when the engine high pressure bleed air valve is open when commanded closed. (FCOM, 2.40.1). A.- False. B.- True.

The air driven hydraulic pump, and the AFT cargo compartment use bleed air delivered through the center pneumatic duct?(FCOM, 2.40.3). A.- TRUE. B.- FALSE.

Pneumatics Graphic 4: With the APU operating, which air conditioning pack can be supplied? (FCOM, 2.40.2). A.- Left pack. B.- Right pack. C.- Both.

Pneumatics Graphic 4 : With the APU operating, what is the position of the APU bleed air valve? (FCOM, 2.10.10-11). A.- ON (Bar in view) but the OFF light means the engines bleed air valve is closed automatically due to a system fault. B.- Closed. C.- In transit.

Pneumatics Graphic 4: Is this a normal indication for left and right bleed air switches prior to engine start? (CBT, Bleed Air Operation). A.- YES. B.- NO.

Pneumatics Graphic: 4 Is the panel set for engine start from the APU?. A.- YES. B.- NO.

Pneumatics Graphic 3: With these indications, what is the condition of the APU bleed air valve? (FCOM, 2.10.11). A.- Signaled open, but not open. B.- Signaled closed, but not closed. C.- Signaled open and fully open.

Pneumatics Graphic 3: What is the problem with the left wing pneumatic duct? (FCOM, 2.10.11). A.- ADP overtemperature. B.- A high temperature bleed air leak is detected in the left, or engine strut pneumatic duct. C.- A Low temperature bleed air leak is detected in the Left.

Pneumatics Graphic: 2 What is the position of the APU bleed air valve? (FCOM, 2.10.11). A.- Intransit. B.- Closed. C.- Open.

Pneumatics Graphic 2: Can the right engine be started using APU bleed air? (FCOM, 2.10.10). A.- YES. B.- NO.

Pneumatic graphic 2: With the isolation valves in this position, what source can supply air to the left pneumatic duct? (FCOM, 2.40.3). A.- Ground supply, APU, and both engines. B.- APU and left engine. C.- Right engine.

In flight, APU bleed air is available up to approximately: (FCOM, 2.40.2). A.- 17,000 feet. B.- 41.000 feet. C.- 11.000 feet.

If the center isolation switch is blank, and the valve light off, what area is shut off from engine bleed air? (FCOM, 2.40.3). A.- Center pneumatic duct. B.- Forward cargo compartment. C.- Wing anti-ice duct.

How the Pressurization System works? (FCOM, 2.30.1). A.- The pressurization system has only automatic operating modes. B.- Cabin pressurization is controlled by adjusting the discharge of conditioned cabin air through the outflow valve. C.- Negative pressure relief valves and negative pressure relief doors protect the fuselage against excessive pressure differential.

What does illumination of the qty light indicate about the quantity of fluid in the hydraulic reservoir? (FCOM, 13.10.1). A.- Reservoir quantity is low. B.- Quantity is at the refill level. C.- Overfull condition exist on the ground.

HYDRAULICS GRAPHIC 6: What is indicated? (FCOM, 13.10.3). A.- Rat is stowed. B.- Rat is not locked in stowed position. C.- Rat is extended and producing hydraulic pressure.

HYDRAULICS GRAPHIC 2: What means the C2 electrical Press light illuminated? (FCOM, 13.10.1). A.- Illuminated (amber) – reservoir quantity is low. B.- Illuminated (amber) – pump output pressure is low. C.- the engine–driven hydraulic pump is turned off and depressurized.

Which of the following would be affected by an inoperative air-driven demand pump? (FCOM, 13.20.5). A.- Thrust reverser actuation. B.- Landing gear retraction. C.- Braking.

With the selector in auto, when will the left and right demand pumps operate? (FCOM, 13.10.2). A.- During ground flap operation. B.- When system pressure is low. C.- Only when operating the thrust reversers.

Which reservoir contains the dedicated volume of hydraulic fluid for reserve brakes and steering? (FCOM, 13.20.5). A.- Left. B.- Center. C.- Right.

HYDRAULICS GRAPHICS 5 & 6: Which one of the following indicates the ram air turbine is producing hydraulic pressure? (FCOM, 13.10.3). A.- Rat pressure light illuminated. B.- Center system low pressure light extinguished. C.- Rat unlocked light illuminated.

Which of the following will shutoff hydraulic fluid to the left engine pump? (FCOM, 13.20.2). A.- Pull the right engine fire switch. B.- Pull the left engine fire switch. C.- Turn the left engine pump off.

Which condition requires use of the reserve brakes and steering switch? (CBT). A.- Inoperative ram air turbine. B.- Loss of right hydraulic system. C.- Loss of center hydraulic system.

Which hydraulic systems flight controls are powered by the ram air turbine system? (FCOM, 13.20.6). A.- Left. B.- Center. C.- Right.

Which center hydraulic system pump powers the reserve brakes and steering system? (FCOM, 13.20.2). A.- Number one electric pump. B.- Number two electric pump. C.- Air-driven pump.

When will the left engine hydraulic pump produce pressure? (FCOM, 13.10.1). A.- When the left engine rotates. B.- When the right engines rotate. C.- When there is an excessive demand on the left hydraulic system.

When does the ram air turbine (RAT) deploy automatically? (FCOM, 13.20.6). A.- Inflight with both engines shutdown. B.- Anytime both engines are shutdown. C.- Anytime center system pressure is below normal.

When a hydraulic demand pump is turned off, what indicates that the pump has shut down? (FCOM, 13.10.1). A.- The pump low pressure light goes out. B.- The pump low pressure light comes on. C.- The system pressure light comes on.

What type of demand pumps are in the left and right hydraulic systems? (FCOM, 13.20.4). A.- Air driven. B.- Electrically driven. C.- Engine driven.

What type of demand pump powers the center hydraulic system? (FCOM, 13.20.5). A.- Air driven. B.- Electrically driven. C.- Engine driven.

What systems are supplied hydraulic pressure by the ram air turbine (RAT)? (13.20.6). A.- Landing gear. B.- Flaps. C.- Flight controls.

What is indicated when a primary hydraulic pump "press" light comes on? (FCOM, 13.10.1). A.- Pump output pressure low. B.- System pressure low. C.- Pump output pressure high.

What is indicated when a left or right electric demand pump low pressure light illuminates with the pump selector in the auto position? (FCOM, 13.10.1). A.- Pump output pressure is above minimum required. B.- The pump is operating. C.- Pump output pressure is below normal.

What does illumination of the hydraulic pump overheat light indicate? (FCOM, 13.10.1). A.- Reservoir temperature is high. B.- Pump is overheated. C.- Fuel heat exchanger temperature is high.

What does illumination of a hydraulic system low pressure light indicate? (FCOM, 13.10.1). A.- Only primary pump pressure is low. B.- Only demand pump pressure is low. C.- Both primary and demand pump pressure is low.

What action is required to turn off a demand hydraulic pump? (FCOM, 13.10.2). A.- Rotate the selector to off. B.- Push the pump switch. C.- Pull the pump circuit breakers.

The ram air turbine (RAT)can be retracted in flight. (FCOM, 13.20.6). A.- TRUE. B.- FALSE.

HYDRAULICS GRAPHIC 5: Inflight with both engines fail, what action should be taken? (FCOM, 13.20.6). A.- Reduce airspeed below 270 knots. B.- Maintain minimum 130 KTS or above. C.- Push rat switch to retract rat.

HYDRAULICS GRAPHIC 3: The APU is providing electrical power prior to engine start. why is the number two center system electric pump low pressure light on? (FCOM, 13.20.3). A.- Simultaneous operation of all four primary pumps is inhibited. B.- Pump only operates inflight. B.- Pump only operates inflight. C.- Pump operation is inhibited to reduce electrical loads.

HYDRAULICS GRAPHIC 8: What is the condition of the reserve brakes and steering system? (FCOM, 14.10.6). A.- ON. B.- OFF. C.- ARMED.

HYDRAULICS GRAPHIC 4: Which hydraulic reservoir should be refilled? (FCOM, 13.10.2). A.- Left. B.- Center. C.- Right.

HYDRAULICS GRAPHIC 7: What is indicated? (FCOM, 14.10.6). A.- Steering available, but no reserve brakes. B.- Reserve valves are properly positioned. C.- The valve disagrees with the switch position.

HYDRAULICS GRAPHIC 5: What is indicated? (FCOM, 13.10.3). A.- Rat extended and pressure low. B.- Rat has extended and is producing pressure. C.- Rat retracted.

How does pulling the engine fire switch affect the hydraulic system? (FCOM, 13.20.3). A.- Depressurizes the associated hydraulic system. B.- Disconnects the engine hydraulic pump. C.- Shuts off the flow of fluid to the engine pump and depressurizes the pump.