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Air Systems Flashcards

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1
Q

On the ground an external air source can supply conditioned air directly into:

A

The left air conditioning manifold

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2
Q

With the pack control selector in STBY-N the pack produces

A

A constant moderate temperature (Approximately 75°F/24°C)

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3
Q

With the pack control selector in STBY-C the pack produces?

A

A full cold temp (65°F /18°C)

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4
Q

With the pack control selector in STBY-W the pack produces?

A

85

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5
Q

How are the ram air doors and the exhaust doors affected with the pack control selector in any STBY mode?

A

They are fixed in the full open position

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6
Q

The pack high flow system is automatic and is armed during normal operation.

A

True

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7
Q

If a pack overheat condition is detected, the respective pack cycles

A

To max cooling

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8
Q

If a pack Fault condition is detected with the automatic pack control system, the respective pack valve will?

A

Remain in the last controlled position

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9
Q

A PACK OFF light indicates the pack valve is closed due to?

A

The selector is in the off position or a pack trip has occurred or Loss of air to the pack

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10
Q

INOP and a PACK OFF light can indicate?

A

An internal pack overheat

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11
Q

Where is the overheat reset switch for a pack located?

A

In the INOP/PACK OFF light switch

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12
Q

Conditioned air from the mix manifold is distributed to ____ temp control zones on the B767-300P.

A

4

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13
Q

Which temperature control zone does,not have a temperature indication on the B767-300P?

A

FLT DCK

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14
Q

Instead of a temperature indication the FLT DK on the B767-300P has?

A

A valve position indicator

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15
Q

If automatic pressurization switching occurs during a mode failure, how is it displayed to the flight crew?

A

EICAS status message

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16
Q

What does AUTO INOP on the Cabin Altitude Control Panel mean?

A

Both auto controllers have failed, or manual mode has been selected

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17
Q

What will the index mark on the cabin altitude auto rate control establish?

A

A climb of 500 FPM or descent of 300 FPM

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18
Q

Where are the positive pressure relief valves located

A

Left fuselage forward of the wing

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19
Q

When does the cabin Altitude Warning/Light illuminate?

A

10,000’ Cabin Altitude

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20
Q

The lower cargo area is divided into ___ compartments?

A

3

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21
Q

Which cargo compartment or compartments utilize the center APU duct to supply warm air?

A

AFT and Bulk

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22
Q

Where is the Bulk Cargo heat selector located?

A

Accessory panel

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23
Q

What is the function of the BULK CARGO HEAT selector?

A

Allows a higher temperature to be selected for the bulk compartment. (Appx. 65 degrees F)

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24
Q

When the aircraft is on the ground, circulation of cooling air for E/E components is normally produced by?

A

A supply and an exhaust fan

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25
A skin heat exchanger is sometimes used to remove heat from the equipment cooling air and is controlled automatically.
True
26
The valve light on the equipment cooling panel illuminates on the ground if?
One or more of the equipment cooling valves are not in the commanded position
27
What equipment cooling mode must be selected to arm the NO COOLING light?
Override
28
If the left DUCT LEAK light is illuminated, when will it extinguish?
When the temperature along the pneumatic duct cools
29
The airplane is in climb through 20,000ft. and pressurization is being controlled automatically, what is the cabin rate of climb based on?
If the maximum cabin pressure differential is reached, cabin climb rate becomes a function of airplane climb rate, while maintaining the maximum differential pressure.
30
The Trim Air Switch is off. What cabin temperature do the packs attempt to maintain?
75
31
What does the pack INOP light indicate?
Excessive pack outlet temperature or controller fault
32
During automatic control, which temperature zone controls the output of the air conditioning packs?
The zone requiring the coolest air
33
Automatic pressurization control for a flight requires selection of AUTO 1 or 2, desired AUTO RATE and setting of LDG ALT.
True
34
What type of power is used for outflow valve actuation during normal control?
Ac
35
Inflight, how does STBY position affect the equipment cooling air?
Uses the supply fan instead of the exhaust fan
36
What equipment cooling situation causes the ground crew call horn to sound?
Equipment cooling overheat
37
Where is the bleed air from the Cargo Heat system discharged for the cargo compartment heating?
Under the floor of the cargo compartment
38
With the Master Trim Air Switch is off, are the zone temperature controls regulating temperature?
No
39
Why is recirculated air used for air conditioning?
To reduce bleed air requirements
40
What is the purpose of trim air?
Heats conditioned air to meet the zone temperature requirements
41
What occurs after a cabin zone temperature is turned off?
Zone trim air is lost and the INOP light stays on
42
When all zone temperature INOP lights are on, what cabin temperature will the packs maintain?
75
43
If the packs are turned off for takeoff, what produces circulation of air in the passenger airplane?
Recirculating Fans
44
The CABIN ALTITUDE light illuminates. To extinguish it you must:
Reduce cabin altitude below 8,500ft
45
What equipment cooling situation causes the ground crew horn to sound?
Equipment cooling overheat or OVRD is selected on the ground.
46
What does the automatic controller compare when cruise mode is established?
Scheduled cabin altitude and selected landing altitude
47
What is maximum normal operating differential pressure?
8.6
48
The SMOKE light comes on. You have determined the smoke is in the flight deck supply system. How is the smoke removed?
Through the overboard exhaust valve
49
Which isolation valve must be open to allow the flow of APU bleed air into the manifold?
C ISLN
50
When are the L and R isolation valves normally closed?
After engine start
51
What does it mean when the isolation valve light comes on?
Valve and switch position are not in agreemen
52
Which of the following valves isolate the left and right pneumatic system?
Left and right isolation valves and the associated check valves
53
What is indicated if a left or right DUCT LEAK light is on?
DUCT LEAK light on
54
If the DUCT LEAK light is on, when will it go out?
When the temperature along the pneumatic duct cools
55
What is indicated if either the L or R Duct Leak Light stays on after the duct leak procedural steps have been completed?
A leak in the crossover manifold
56
Which systems become inoperative when bleed air is prevented from entering the center pneumatic duct.
ADP and AFT/BULK cargo heat.
57
Which valves MUST be open to start the left engine using a ground air cart?
Starter only
58
The Air Driven Hydraulic Pump, and the Aft Cargo Compartment use bleed air delivered through the Center Pneumatic Duct?
True
59
With the left Isolation Valve open, what source can supply air to the left pneumatic Duct?
Ground Supply, APU, and both engines
60
What does the BLEED light indicate (PW)?
Engine high pressure valve open, when it should be closed
61
What does the BLEED light indicate (GE)?
High pressure shutoff valve and/or pressure regulating valves are open when they should be closed
62
What must be done if a temperature below 45 degrees F is desired with the Forward Cargo Air Conditioning System on the 767 freighter:
The Forward Cargo Heat must be selected OFF.
63
What are the electrical power sources for pressurization control?
Left AC for #1 automatic, Right AC for #2 automatic and standby DC for manual

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