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Atlas B767 Oral Prep > 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 (approx 75ºF/24ºC)

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3
Q

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

A

A full cold temp (65ºF/18ºC)

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4
Q

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

A

A full warm temp (85ºF/30ºC)

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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 sre fixed in the full open position.

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6
Q

The pack high flow system is automatic and is armed during normal opertation - T/F?

A

True.

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7
Q

If a pack overheat condition is detected, the respective pack cycles to..?

A

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 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 controls zones on the B767-300P.

A

4

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13
Q

Which temp control zone does not have a temp indication on the B767-300?

A

FLT DK

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14
Q

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

A

A valve position indicator.

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15
Q

Turning off the trim air switch will illuminate OFF in the switch and illuminate how many INOP lights on the B767-300?

A

4

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16
Q

If the selected automatic pressurization mode fails, what happens?

A

Alternate mode is automatically switched.

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17
Q

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

A

EICAS status msg.

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18
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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19
Q

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

A

A climb of 500 FPM or descent of 300 FPM.

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20
Q

Where are the positive pressure relief valves located?

A

Left fuselage fwd of the wing.

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21
Q

When does the cabin Altitude Warning/Light illuiminate?

A

10,000’ Cabin Altitude.

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22
Q

The lower cargo area is divided into___ compartments?

A

3

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23
Q

Which cargo compartment/s utilize the center APU duct to supply warm air?

A

AFT and BULK

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24
Q

Where is the Bulk Cargo heat selector located?

A

Accessory panel.

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25
Q

The Bulk Cargo heat selector in vent position supplies warmer air and turns on a fan to improve circulation T/F?

A

True.

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26
Q

What is the function of the Bulk Cargo heat selector?

A

Allows a higher temperature to be selected for the Bulk compartment (Approx 65ºF)

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27
Q

The shoulder and foot heaters for each pilot only operate in flight T/F?

A

True.

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28
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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29
Q

A skin heat ex-changer is sometimes used to remove heat from the equipment cooling air and is controlled automatically, T/F?

A

True.

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30
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.

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31
Q

The valve light on the equipment cooling panel illuminates in flight if?

A

Overboard exhaust fuel valve is not closed.

32
Q

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

A

OVRD.

33
Q

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

A

When the temperature along the pneumatic duct cools.

34
Q

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

A

If the max cabin differential pressure is reached, cabin climb rate becomes a function of airplane climb rate, while maintaining the max differential pressure.

35
Q

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

A

An average temperature of 75ºF (24ºC)

36
Q

What does the pack INOP light indicate?

A

Excessive pack outlet temperature or controller fault.

37
Q

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

A

The zone requiring the coolest air.

38
Q

Automatic pressurization control for flight requires selection of AUTO 1 or 2, desired AUTO RATE and setting of LDG ALT, T/F?

A

True.

39
Q

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

A

AC

40
Q

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

A

Uses the supply fan instead of the exhaust fan.

41
Q

What does the equipment cooling NO COOLING light indicate?

A

No cooling airflow through the E/E compartment.

42
Q

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

A

Equipment cooling overheat.

43
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.

44
Q

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

A

No.

45
Q

Why is recirculated air used for air conditioning?

A

To reduce bleed air requirements.

46
Q

What is the purpose of trim air?

A

Heats conditioned air to meet the zone temperature requirements.

47
Q

What occurs after cabin zone temperature is turned off?

A

Zone trim air is lost and the INOP light stays on.

48
Q

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

A

An average temperature of 75ºF (24ºC)

49
Q

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

A

Recirculation fans.

50
Q

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

A

Reduce cabin altitude below 8,500’.

51
Q

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

A

Equipment cooling overheat or OVRD is selected on the ground.

52
Q

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

A

Scheduled cabin altitude and selected landing altitude

53
Q

What is max normal operating differential pressure?

A

8.6psi

54
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.

55
Q

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

A

C ISLN

56
Q

When are the L and R isolation valves normally closed?

A

After engine start.

57
Q

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

A

Valve and switch position are not in agreement.

58
Q

Which of the following valves isolate the L and R pneumatic system?

A

L and R isolation valves and associated check valves.

59
Q

What is indicated if a L or R DUCT LEAK light is on?

A

A pneumatic duct leak.

60
Q

What indication do you see if there is a bleed air leak in the manifold?

A

DUCT LEAK light illuminated.

61
Q

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

A

When the temperature along the pneumatic duct cools.

62
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.

63
Q

What causes a center DUCT LEAK light to illuminate?

A

Center pneumatic duct leak.

64
Q

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

A

ADP and AFT/BULK cargo heat.

65
Q

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

A

Starter only.

66
Q

The Air Driven Hydraulic Pump, and the Aft Cargo Compartment use bleed air delivered through the center pneumatic duct, T/F?

A

True

67
Q

With the L isolation valve open, what source can supply air to the L pneumatic duct?

A

Ground supply, APU and both engines.

68
Q

What does BLEED light indicate? (GE)

A

High pressure shut off valve and/or pressure regulating valves are open when they should be closed.

69
Q

What does BLEED light indicate? (PW)

A

Engine high pressure valve open when it should be closed.

70
Q

What is the problem with the left DUCT LEAK light illuminated?

A

Leak in left wing duct.

71
Q

With the APU operating, and both isolation valves open, which air conditioning pack can be supplied?

A

Left and right packs.

72
Q

With the APU operating, what is the position of the APU bleed air valve?

A

Open.

73
Q

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

A

The Forward Cargo Heat must be selected OFF.

74
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.

75
Q

How many cabin altitude auto controllers are provided?

A

Two controllers, AUTO 1 and AUTO 2

Atlas B767 Oral Prep (17 decks)

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