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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
The APU can supply air for ________ on the ground for all operations
two packs
26
In flight with the air conditioning PACK switches in AUTO and both packs operating, _________.
the packs provide “normal air flow”
27
Inflight with one PACK operating _________.
the operating pack provides high air flow automatically, if the flaps remain retracted
28
The ram air system is used to provide cooling for the __________ in the air conditioning systems.
heat exchangers
29
In a B737-800, what happens if an amber ZONE TEMP light illuminates?
the MASTER CAUTION light will illuminate, and the trim air valve closes
30
The recirculation fan system __________ the air conditioning load and the engine bleed air demand.
reduces
31
What makes the equipment cooling OFF light illuminate?
loss of air flow due to failure of an equipment cooling fan
32
The TRIP RESET switch resets the ______________.
1) BLEED trip OFF, PACK trip OFF | 2) DUCT OVERHEAT on the B737-700, or the ZONE TEMP on the B737-800
33
On the B737-800, illumination of the PACK, MASTER CAUTION, and AIR COND annunciators during recall indicates _____________.
a failure of the primary or standby pack controls
34
If both primary and standby pack controls fail for the same pack _________.
the pack will continue to operate without control unless excessive temperatures cause the pack to trip off
35
Cabin pressurization and ventilation is controlled by?
the outflow valve and the overboard exhaust valve
36
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.
three
37
On the cabin altitude panel, which scale on the CABIN Altimeter (ATL) / Differential Pressure (DIFF PRESS) Indicator indicates the cabin altitude in feet?
Inner Scale
38
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?
Outer Scale
39
How can the intermittent cabin altitude warning horn be cut out?
By pushing the Altitude (ATL) HORN CUTOUT Switch
40
At what cabin altitude will the intermittent cabin altitude warning sound?
10.000ft
41
How is the cabin rate of climb displayed?
on the cabin rate of climb indicator
42
On the Cabin Pressurization Panel, which modes automatically pressurize the aircraft?
AUTO & ALTN
43
On the Cabin Pressurization Panel, the MAN mode controls aircraft pressurization _____________.
manually by the Outflow Valve switch
44
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.
20 sec
45
On the Cabin Pressurization Panel, an amber light indicates _____________.
automatic pressurization system (dual channel) failure is detected
46
On the Cabin Pressurization Panel, if both the amber AUTO FAIL light and the green ALTN light is illuminated, _________.
a single channel controller failure has occurred
47
The OFF SCHED DESCENT light indicates the aircraft began descent before having reached the planned cruise altitude. The controller programs the cabin ____________.
To land at the takeoff field elevation without further pilot inputs
48
The 737- 700/800 minimum obstruction clearance path, in a turn, is determined by
the wingtip arc
49
Which flight deck lights are powered with loss of normal electrical power?
Standby compass light, dome lights, instrument flood lights, and selected system information and warning lights.
50
Cabin EXIT lights will automatically illuminate when
EMER EXIT LIGHTS switch is ARMED and electrical power to DC bus No. 1 fails or AC power has been turned off
51
On aircraft equipped with LED strakelet taxi lights, the Captain should slowly cycle the taxi light switch to signal the Marshaller because
LED lights need time to activate after the switch is placed to ON
52
Turning the STERILE light switch ON will
Illuminate a blue light above the flight deck door to alert the flight attendants and disable the passenger electronic outlets.
53
An illuminated ELT (Emergency Locator Transmitter) light represents
The ELT has been activated and is transmitting
54
What is the function of the unlock push button on the Jamco flight deck door control panel?
Electrically unlocks flight deck door
55
If the unlock push button on the Jamco Flight Deck Door Control Panel illuminates flashing red, ____________.
A fault in the door system or status lights has occurred and security of the door is unknown
56
What is the function of the hard lock push button on the Jamco flight deck door control panel?
Stops door emergency entrance unlock function that would occur after 30 seconds, thus keeping door HARD LOCKED for 30 minutes.
57
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?
“DOOR, DOOR, DOOR” warning message will stop after 30 seconds and the door will electrically unlock for only 5 seconds to allow access
58
With the emergency exit switch in the armed position, lights automatically illuminate when
1) DC bus No. 1 fails | 2) AC power is turned off

United B737 (pitu) (17 decks)

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