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Recurrent > Air Systems > Flashcards

Air Systems Flashcards

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
Q

A skin heat exchanger is sometimes used to remove heat from the equipment cooling air and is controlled automatically.

A

True

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26
Q

The valve light on the equipment cooling panel illuminates on the ground if?

A

One or more of the equipment cooling valves are not in the commanded position

27
Q

What equipment cooling mode must be selected to arm the NO COOLING light?

A

Override

28
Q

If the left DUCT LEAK light is illuminated, when will it extinguish?

A

When the temperature along the pneumatic duct cools

29
Q

The airplane is in climb through 20,000ft. and pressurization is being controlled automatically, what is the cabin rate of climb based on?

A

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
Q

The Trim Air Switch is off. What cabin temperature do the packs attempt to maintain?

A

75

31
Q

What does the pack INOP light indicate?

A

Excessive pack outlet temperature or controller fault

32
Q

During automatic control, which temperature zone controls the output of the air conditioning packs?

A

The zone requiring the coolest air

33
Q

Automatic pressurization control for a flight requires selection of AUTO 1 or 2, desired AUTO RATE and setting of LDG ALT.

A

True

34
Q

What type of power is used for outflow valve actuation during normal control?

A

Ac

35
Q

Inflight, how does STBY position affect the equipment cooling air?

A

Uses the supply fan instead of the exhaust fan

36
Q

What equipment cooling situation causes the ground crew call horn to sound?

A

Equipment cooling overheat

37
Q

Where is the bleed air from the Cargo Heat system discharged for the cargo compartment heating?

A

Under the floor of the cargo compartment

38
Q

With the Master Trim Air Switch is off, are the zone temperature controls regulating temperature?

A

No

39
Q

Why is recirculated air used for air conditioning?

A

To reduce bleed air requirements

40
Q

What is the purpose of trim air?

A

Heats conditioned air to meet the zone temperature requirements

41
Q

What occurs after a cabin zone temperature is turned off?

A

Zone trim air is lost and the INOP light stays on

42
Q

When all zone temperature INOP lights are on, what cabin temperature will the packs maintain?

A

75

43
Q

If the packs are turned off for takeoff, what produces circulation of air in the passenger airplane?

A

Recirculating Fans

44
Q

The CABIN ALTITUDE light illuminates. To extinguish it you must:

A

Reduce cabin altitude below 8,500ft

45
Q

What equipment cooling situation causes the ground crew horn to sound?

A

Equipment cooling overheat or OVRD is selected on the ground.

46
Q

What does the automatic controller compare when cruise mode is established?

A

Scheduled cabin altitude and selected landing altitude

47
Q

What is maximum normal operating differential pressure?

A

8.6

48
Q

The SMOKE light comes on. You have determined the smoke is in the flight deck supply system. How
is the smoke removed?

A

Through the overboard exhaust valve

49
Q

Which isolation valve must be open to allow the flow of APU bleed air into the manifold?

A

C ISLN

50
Q

When are the L and R isolation valves normally closed?

A

After engine start

51
Q

What does it mean when the isolation valve light comes on?

A

Valve and switch position are not in agreemen

52
Q

Which of the following valves isolate the left and right pneumatic system?

A

Left and right isolation valves and the associated check valves

53
Q

What is indicated if a left or right DUCT LEAK light is on?

A

DUCT LEAK light on

54
Q

If the DUCT LEAK light is on, when will it go out?

A

When the temperature along the pneumatic duct cools

55
Q

What is indicated if either the L or R Duct Leak Light stays on after the duct leak procedural steps
have been completed?

A

A leak in the crossover manifold

56
Q

Which systems become inoperative when bleed air is prevented from entering the center pneumatic
duct.

A

ADP and AFT/BULK cargo heat.

57
Q

Which valves MUST be open to start the left engine using a ground air cart?

A

Starter only

58
Q

The Air Driven Hydraulic Pump, and the Aft Cargo Compartment use bleed air delivered through the
Center Pneumatic Duct?

A

True

59
Q

With the left Isolation Valve open, what source can supply air to the left pneumatic Duct?

A

Ground Supply, APU, and both engines

60
Q

What does the BLEED light indicate (PW)?

A

Engine high pressure valve open, when it should be closed

61
Q

What does the BLEED light indicate (GE)?

A

High pressure shutoff valve and/or pressure regulating valves are open when they should
be closed

62
Q

What must be done if a temperature below 45 degrees F is desired with the Forward Cargo Air Conditioning System on the 767 freighter:

A

The Forward Cargo Heat must be selected OFF.

63
Q

What are the electrical power sources for pressurization control?

A

Left AC for #1 automatic, Right AC for #2 automatic and standby DC for manual

Recurrent (7 decks)

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