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AAL 737 > Pneumatics > Flashcards

Pneumatics Flashcards

1
Q

The Boeing 737-800 uses pneumatic air from which of the following sources?

a. Engine bleed air, accumulator air, APU bleed air
b. Ram air, external air, accumulator air
c. Ram air, engine bleed air, APU bleed air
d. Engine bleed air, external air, APU bleed air

A

d. Engine bleed air, external air, APU bleed air

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2
Q

Bleed air from the engines comes from what compressor stages?

a. Fan and 9th
b. 5th and 10th
c. 5th and 9th
d. 7th and 13th

A

c. 5th and 9th

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3
Q

The ____ systems rely on pneumatic pressure for operation.

a. engine starting, air conditioning/pressurization, wing and engine anti-ice, hydraulic, water tank pressurization, and TAT probe
b. APU, engine starting, air conditioning, and aspirated TAT probe
c. air conditioning/pressurization, wing anti-ice, APU
d. wing anti-ice, APU, engine starting, air conditioning

A

a. engine starting, air conditioning/pressurization, wing and engine anti-ice, hydraulic, water tank pressurization, and TAT probe

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4
Q

____ cause(s) the engine bleed valve to automatically close.

a. Over pressure only
b. Over temperature only
c. Neither over pressure nor over temperature will
d. Either over pressure or over temperature

A

d. Either over pressure or over temperature

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5
Q

Illumination of the amber BLEED TRIP OFF light indicates what valve has automatically closed?

a. Isolation valve
b. Engine bleed air valve
c. Corresponding APU shutoff valve
d. All the above

A

b. Engine bleed air valve

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6
Q

When the APU is shut down, the APU bleed valve ___________.

a. remains open
b. must be closed manually by placing the APU bleed air switch to OFF
c. closes automatically regardless of APU bleed air switch position
d. will close when the second engine is started

A

c. closes automatically regardless of APU bleed air switch position

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7
Q

The APU bleed air valve will close if ____.

a. the APU Bleed Air Switch is placed OFF or if the APU is shutdown
b. APU overheat or overpressure occur
c. engine bleed air is available
d. engine bleed air is supplying the wing anti-ice system

A

a. the APU Bleed Air Switch is placed OFF or if the APU is shutdown

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8
Q

When starting engines with a ground air source, external air pressure should be ____ psi.

a. minimum of 25
b. minimum of 30
c. maximum of 25
d. maximum of 30

A

b. minimum of 30

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9
Q

During normal operations, if the Isolation Valve switch is in AUTO, then the valve ____.

a. is open
b. is closed
c. varies due to pressure demands
d. varies due to temperature fluctuations

A

b. is closed

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10
Q

When the Isolation Valve Switch is in AUTO, the valve will open automatically if ____.

a. a pack switch is placed OFF
b. an engine bleed switch is placed OFF
c. a pack moves to high flow
d. either A or B occur

A

d. either A or B occur

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11
Q

BLEED TRIP OFF light would illuminate for ____.

a. excessive temperature only
b. excessive temperature or pressure
c. 5th stage valve stuck open
d. excessive pressure only

A

b. excessive temperature or pressure

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12
Q

The right WING BODY OVERHEAT light indicates a duct leak in the ____.

a. right engine strut, right wing outboard leading edge, keel beam, or right air conditioning bay
b. right engine strut, right wing inboard leading edge, or right air conditioning bay
c. right engine strut, right wing outboard leading edge, or right forward cargo bay
d. right wing inboard leading edge, right forward cargo bay, or keel beam

A

b. right engine strut, right wing inboard leading edge, or right air conditioning bay

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13
Q

The left WING BODY OVERHEAT light indicates a duct leak in the left engine strut, left wing leading edge, left air conditioning bay, and ____.

a. left wing anti-ice system
b. APU duct and mix manifold
c. keel beam duct and forward cargo area
d. APU duct and keel beam ducting

A

d. APU duct and keel beam ducting

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14
Q

A bleed air duct leak in the __ will cause this light to illuminate.

a. Left engine strut. right inboard wing leading edge, or the left air conditioning bay
b. left engine strut, left inboard wing leading edge, left air conditioning bay, keel beam, or the APU bleed air duct
c. left engine cowling or left inboard wing leading edge
d. anti-ice duct outboard of the left engine or the APU bleed air duct

A

b. left engine strut, left inboard wing leading edge, left air conditioning bay, keel beam, or the APU bleed air duct

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15
Q

Pushing the TRIP RESET switch will reset the WING-BODY OVERHEAT light _____.

a. if the light was caused by high pressure only
b. if the light was caused by high temperature only
c. Never. This light cannot be reset with the TRIP RESET Switch
d. if the light was caused by either high temperature or high pressure

A

c. Never. This light cannot be reset with the TRIP RESET Switch

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16
Q

The QRH directs the crew to close the Isolation valve, turn off the pack, close the engine bleed on the affected side, and turn off the wing anti-ice. Accomplishing these procedures will ____.

a. isolate bleed air to the left pack while still allowing air to flow to the left wing anti-ice duct
b. prevent air from the #1 engine entering the left bleed air duct but still allows air to the left pack
c. prevent air from the #1 engine entering the left bleed air duct and to shutoff all bleed air to the left side
d. stop all bleed air from flowing to the right side

A

c. prevent air from the #1 engine entering the left bleed air duct and to shutoff all bleed air to \he left side

17
Q

The aircraft is climbing through 5,000 ft when this light illuminated. What caused this light to
illuminate?
a. Wing anti-ice is ON and an overheat condition has occurred in the wing.
b. Engine #2 anti-ice is ON and an overheat has occurred in the cowl lip.
c. An overheat or an overpressure condition has occurred in the #2 engine bleed air duct.
d. The left pack has overheated. The right pack was unable to meet pressure demands and tripped off

A

c. An overheat or an overpressure condition has occurred in the #2 engine bleed air duct

18
Q

What happened when this light illuminated in flight?

a. The #2 engine bleed air valve closes automatically.
b. The isolation valve was open but will now close automatically.
c. The #2 engine bleed air valve will close only if the duct temperature reaches a predetermined limit.
d. The bleed air valve does not close with a bleed trip.

A

a. The #2 engine bleed air valve closes automatically.

19
Q

The flaps were retracted in flight when this light illuminated. The QRH directs the crew to RESET the tripped bleed. The BLEED TRIP OFF Light remains illuminated. The QRH then directs the crew to turn OFF the Right A/C Pack Switch. Therefore, the _____.

a. left pack switches to “high air flow” mode after the isolation valve closes
b. right pack switches to “high air flow mode after the isolation valve opens
c. left pack remains shut down and the right pack switches to “high air flow” mode
d. right pack remains shut down and the left pack switches to “high air flow” mode

A

d. right pack remains shut down and the left pack switches to “high air flow” mode

20
Q

While in level flight at FL350 with the WING ANTI-ICE Switch ON, the amber lights shown on the right

illuminate. Which location could be the source of the bleed air leak?
a. APU Bleed Air Duel
b. Keel Beam
c. Right-Hand Air Conditioning Bay
d. Right Wing Anti-Ice Duct

A

c. Right-Hand Air Conditioning Bay

21
Q

These illuminated amber lights, confirm the existence of a bleed air leak. The Wing Anti-lce Switch is ON. What is the first corrective action step in this circumstance?

a. Turn OFF the BLEED Air Switch on the affected side.
b. Close the Isolation Valve
c. Turn OFF the Air Conditioning PACK Switch on the affected side.
d. Select the WING ANTI-ICE Switch to OFF.

A

b. Close the Isolation Valve

22
Q

Which statement below most accurately describes what will happen when you press the TRIP RESET Switch in this scenario?

a. The Right WING-BODY OVERHEAT Light will extinguish if the problem has been corrected.
b. Nothing
c. The Right WING-BODY OVERHEAT Light will extinguish momentarily, then re-illuminate if the problem still exists.
d. The Left Air Conditioning Pack will regulate to high flow if the flaps are up.

A

b. Nothing

23
Q

What would cause this light to illuminate?

a. #2 Bleed Switch ON, Isolation Valve Closed, and APU Bleed Valve Open
b. Isolation Valve Open and APU Bleed Valve Closed
c. #1 and #2 Bleed Switches ON, APU Valve Open, and Isolation Valve Open
d. #1 and #t2 Engine Bleed Switches OFF

A

c. #1 and #2 Bleed Switches ON, APU Valve Open, and Isolation Valve Open

24
Q

What are the restrictions when this light is ON?

a. There are no restrictions.
b. Two packs and one bleed source cannot be operated simultaneously.
c. Throttles idle, if #1 Engine Bleed Open, or #2 Engine Bleed Open and Isolation Valve Open.
d. The APU and either engine cannot be run at the same time.

A

c. Throttles idle, if #1 Engine Bleed Open, or #2 Engine Bleed Open and Isolation Valve Open

25
Q

We can operate a single engine taxi (On #2 Engine) with a dual bleed light on by _____.

a. ensuring duct pressure is less than 30 psi
b. Remaining parked. Single Engine Taxi is not allowed
c. closing the isolation valve
d. closing the #2 Engine Bleed

A

c. closing the isolation valve

26
Q

A bleed air duct leak is indicated by a ____ light.

a. PACK
b. WING-BODY OVERHEAT
c. BLEED TRIP OFF
d. ZONE TEMP

A

b. WING-BODY OVERHEAT

27
Q

The APU bleed valve must be closed if ____.

a. Engine 1 is running above idle and its bleed air valve is open
b. Engine 2 is running above idle, its bleed air valve is open, and the isolation valve is open
c. external air is connected with the isolation valve open
d. all of the above

A

d. all of the above

28
Q

A DUAL BLEED light will illuminate when ____.

a. the APU bleed air valve is open and Engine 1 Bleed Switch is ON
b. the APU bleed air valve is open, Engine 2 Bleed Switch is ON, and the isolation valve is open
c. external air is connected and the isolation valve is open
d. either A or B occurs

A

d. either A or B occurs

29
Q

(MAX) How is the operation of the bleed air system managed?

a. Pressure controllers
b. Electronically controlled
c. Pneumatically controlled
d. Air temperature flow shutoff valves

A

b. Electronically controlled

30
Q

(MAX) BLEED Light illuminates for:

a. Dual controller failure.
b. Over-temperature or overpressure.
c. System fault or failure.
d. Both b and c above

A

d. Both b and c above

31
Q

(MAX) PACK Light Illuminates for:

a. Over-temperature.
b. Over Pressure.
c. Both pack switches are in the OFF position 45 seconds after flap retraction on takeoff.
d. Both a and c above

A

d. Both a and c above

32
Q

(MAX) Features of MAX Bleed Air System:

a. System allows operation of both packs from a single bleed air source.
b. System has been upgraded to a Digital Bleed Air Supply which automatically detects and isolates faults.
c. Engine Bleed air is only required if the new, more powerful APU is not operating while airborne.
d. Both a and b above.

A

d. Both a and b above

33
Q

(MAX) If smoke is detected within the equipment cooling system, what amber caution light(s) will illuminate?

a. Overheat and Master Caution
b. Equip Smoke and Master Caution
c. Smoke and Master Caution
d. Smoke on Recall

A

b. Equip Smoke and Master Caution

AAL 737 (32 decks)

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