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United B737 (pitu) > Test Qs > Flashcards

Test Qs Flashcards

1
Q

The passenger oxygen system is supplied by ___________located at each Passenger Service Unit (PSU)

A

individual chemical oxygen generators

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2
Q

The passenger oxygen system is activated automatically by a pressure switch at a cabin altitude of ______ or when the Passenger Oxygen Switch on the aft overhead panel is positioned to ON.

A

14.000 ft

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3
Q

An illuminated “PASS OXY ON” light on the aft overhead panel indicates:

A

The passenger oxygen system has been activated

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4
Q

How is the flow of oxygen initiated to the passenger masks?

A

By pulling any mask in the unit down

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5
Q

Once passenger oxygen is activated, oxygen flows for approximately _____ and cannot be shutoff.

A

12 min

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6
Q

B737-800, bleed air is obtained from the ____ & ____ stages of the compressor section of the engine

A

5th; 9th

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7
Q

B737-800, when 5th low-stage pressure is insufficient, the ___ high-stage valve modulates open to maintain proper pressure

A

9th

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8
Q

The engine bleed air valve is normally DC power activated and ______ operated.

A

pneumatically

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9
Q

The illumination of the BLEED TRIP OFF light indicates ________.

A

engine bleed air temperature or pressure exceeds a predetermined limit

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10
Q

What occurs when the BLEED TRIP OFF light illuminates?

A

The respective engine bleed air valve closes automatically

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11
Q

What sources of air can be used to start the engine?

A

APU, ground air cart, and engine bleed air

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12
Q

With the isolation valve switch in AUTO, both engine bleed air switches ON, and both air conditioning pack switches AUTO or HIGH, the isolation valve is _____.

A

closed

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13
Q

With the isolation valve switch in AUTO, if either an engine bleed air switch or an air conditioning pack switch is positioned OFF, the isolation valve is _____.

A

open

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14
Q

Does the APU bleed air switch affect the isolation valve position?

A

no

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15
Q

Does the APU bleed air valve, on the B737-800, automatically close when the APU is shut down?

A

yes

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16
Q

The APU bleed air valve is___ activated and ______ operated.

A

DC; pneumatically

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17
Q

With the DUAL BLEED light illuminated, engine thrust must be _______.

A

limited to idle, if not conducting single engine taxi operations on the ground.

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18
Q

What causes a wing-body overheat condition?

A

a bleed air duct leak

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19
Q

If a leak in the bleed duct from the APU occurs, which WING-BODY OVER HEAT light will illuminate?

A

left

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20
Q

With the ISOLOATION VALVE switch in AUTO, the isolation valve _________ if either engine BLEED air or air condition PACK switch is positioned OFF.

A

automatically opens

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21
Q

The Wing-Body Overheat (OVHT) TEST switch _____________.

A

1) Tests wing-body overheat detector circuits

2) Illuminates both WING-BODY OVERHEAT lights

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22
Q

Conditioned air for the cabin comes from _________________.

A

either the aircraft air conditioning system or a preconditioned ground source

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23
Q

Conditioned air from the ______, upstream of the mix manifold, flows directly to the flight deck.

A

left pack

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24
Q

Air from the left pack, air from the right pack, and air from the recirculation system is combined in the ________.

A

mix manifold

25
Q

The APU can supply air for ________ on the ground for all operations

A

two packs

26
Q

In flight with the air conditioning PACK switches in AUTO and both packs operating, _________.

A

the packs provide “normal air flow”

27
Q

Inflight with one PACK operating _________.

A

the operating pack provides high air flow automatically, if the flaps remain retracted

28
Q

The ram air system is used to provide cooling for the __________ in the air conditioning systems.

A

heat exchangers

29
Q

In a B737-800, what happens if an amber ZONE TEMP light illuminates?

A

the MASTER CAUTION light will illuminate, and the trim air valve closes

30
Q

The recirculation fan system __________ the air conditioning load and the engine bleed air demand.

A

reduces

31
Q

What makes the equipment cooling OFF light illuminate?

A

loss of air flow due to failure of an equipment cooling fan

32
Q

The TRIP RESET switch resets the ______________.

A

1) BLEED trip OFF, PACK trip OFF

2) DUCT OVERHEAT on the B737-700, or the ZONE TEMP on the B737-800

33
Q

On the B737-800, illumination of the PACK, MASTER CAUTION, and AIR COND annunciators during recall indicates _____________.

A

a failure of the primary or standby pack controls

34
Q

If both primary and standby pack controls fail for the same pack _________.

A

the pack will continue to operate without control unless excessive temperatures cause the pack to trip off

35
Q

Cabin pressurization and ventilation is controlled by?

A

the outflow valve and the overboard exhaust valve

36
Q

The main outflow valve is actuated by one of _____ DC motors and is the overboard exhaust exit for the majority of the air circulated through the passenger cabin.

A

three

37
Q

On the cabin altitude panel, which scale on the CABIN Altimeter (ATL) / Differential Pressure (DIFF PRESS) Indicator indicates the cabin altitude in feet?

A

Inner Scale

38
Q

On the cabin altitude panel, which scale on the CABIN Altimeter (ATL) / Differential Pressure (DIFF PRESS) Indicator indicates the differential pressure between cabin and ambient in psi?

A

Outer Scale

39
Q

How can the intermittent cabin altitude warning horn be cut out?

A

By pushing the Altitude (ATL) HORN CUTOUT Switch

40
Q

At what cabin altitude will the intermittent cabin altitude warning sound?

A

10.000ft

41
Q

How is the cabin rate of climb displayed?

A

on the cabin rate of climb indicator

42
Q

On the Cabin Pressurization Panel, which modes automatically pressurize the aircraft?

A

AUTO & ALTN

43
Q

On the Cabin Pressurization Panel, the MAN mode controls aircraft pressurization _____________.

A

manually by the Outflow Valve switch

44
Q

On the Cabin Pressurization Panel, with the pressurization mode selector in the MAN mode, the outflow valve switch takes approximately _______ to move the outflow valve in the full range of motion.

A

20 sec

45
Q

On the Cabin Pressurization Panel, an amber light indicates _____________.

A

automatic pressurization system (dual channel) failure is detected

46
Q

On the Cabin Pressurization Panel, if both the amber AUTO FAIL light and the green ALTN light is illuminated, _________.

A

a single channel controller failure has occurred

47
Q

The OFF SCHED DESCENT light indicates the aircraft began descent before having reached the planned cruise altitude. The controller programs the cabin ____________.

A

To land at the takeoff field elevation without further pilot inputs

48
Q

The 737- 700/800 minimum obstruction clearance path, in a turn, is determined by

A

the wingtip arc

49
Q

Which flight deck lights are powered with loss of normal electrical power?

A

Standby compass light, dome lights, instrument flood lights, and selected system information and warning lights.

50
Q

Cabin EXIT lights will automatically illuminate when

A

EMER EXIT LIGHTS switch is ARMED and electrical power to DC bus No. 1 fails or AC power has been turned off

51
Q

On aircraft equipped with LED strakelet taxi lights, the Captain should slowly cycle the taxi light switch to signal the Marshaller because

A

LED lights need time to activate after the switch is placed to ON

52
Q

Turning the STERILE light switch ON will

A

Illuminate a blue light above the flight deck door to alert the flight attendants and disable the passenger electronic outlets.

53
Q

An illuminated ELT (Emergency Locator Transmitter) light represents

A

The ELT has been activated and is transmitting

54
Q

What is the function of the unlock push button on the Jamco flight deck door control panel?

A

Electrically unlocks flight deck door

55
Q

If the unlock push button on the Jamco Flight Deck Door Control Panel illuminates flashing red, ____________.

A

A fault in the door system or status lights has occurred and security of the door is unknown

56
Q

What is the function of the hard lock push button on the Jamco flight deck door control panel?

A

Stops door emergency entrance unlock function that would occur after 30 seconds, thus keeping door HARD LOCKED for 30 minutes.

57
Q

What happens to the Jamco flight deck door if the flight deck door emergency entrance open button is pushed, and the flight crew does not intervene?

A

“DOOR, DOOR, DOOR” warning message will stop after 30 seconds and the door will electrically unlock for only 5 seconds to allow access

58
Q

With the emergency exit switch in the armed position, lights automatically illuminate when

A

1) DC bus No. 1 fails

2) AC power is turned off

United B737 (pitu) (17 decks)

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