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Global 6000 > IAMS > Flashcards

IAMS Flashcards

1
Q

During ground operation, what is the priority bleed source for engine starting?

A

APU

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2
Q

What are the two functions

of the ram air system?

A
  1. Provide cooling for the pack heat exchangers

2. Provide alternate source of fresh air to the airplane during unpressurized flight

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3
Q

During normal flight operations, what is the purpose of engine bleed air?

A

Environmental control, wing and cowl anti-ice

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4
Q

What happens to the packs when the

DITCHING switch/light is used?

A

The packs shut down

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5
Q

How many outflow valves are there,

and how are they operated?

A

Two. They are electrically operated.

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6
Q

What cabin pressure information displays on the STATUS page when the pressurization
MAN mode is selected?

A

Both outflow valve position indicators and a cabin rate analog gauge display

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7
Q

Which engine compressor stages

supply bleed air?

A

5th-stage low-pressure port and

8th-stage high-pressure port

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8
Q

What function is lost when the TRIM AIR is off?

A

Zonal temperature control

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9
Q

What are the pack temperature range limits during manual operation?

A

+5°C to 60°C

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10
Q

How long does the cabin pressure controller retain the prepressurization sequence altitude after takeoff?

A

10 minutes

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11
Q

What is the function of the flow control valves (FCVs)?

A

The FCVs modulate to provide a preset flow schedule to the packs, and to close / to isolate a pack

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12
Q

What are the two cabin rate modes available on the PRESSURIZATION panel?

A

Normal mode:
500 ft/min up and 300 ft/min down;
high mode:
800 ft/min up and 800 ft/min down

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13
Q

What is the maximum cabin relief differential pressure?

A

10.73 PSI

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14
Q

What is the maximum negative relief differential pressure?

A

-0.5 PSI

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15
Q

What is the maximum OAT for air-conditioning operation using the APU as the bleed source?

A

45°C

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16
Q

What is the purpose of safety valves?

A

Provide overpressure /

negative pressure relief

17
Q

When would a pilot need to manually set the landing elevation?

A

QFE operations,

Airport not in the FMS database

18
Q

At and below which altitude can the ram air valve be opened?

A

15,000 feet

19
Q

Can one engine supply two AC packs simultaneously?

A

No. The BMC prevents two-pack operation from a single engine source.

20
Q

At what cabin altitude will an EICAS

warning message display?

A

9000 feet

21
Q

At what cabin altitude will an EICAS caution message display?

A

8200 feet

22
Q

What is the maximum altitude

for AUX PRESS operation?

A

41,000 ft

23
Q

How are bleed-air leaks monitored in the aircraft?

A

Dual loops

24
Q

In a normally pressurized aircraft as per the pressurization table, what is the cabin altitude for an aircraft at 51,000 ft?

A

5670 ft and 7230 ft (not incorporating CPC mod)

25
Q

What occurs automatically when

a bleed-air leak is detected?

A

The BMC isolates the affected manifold by closing the appropriate valves

26
Q

What is the maximum altitude for selection of the EMER DEPRESS switch/light?

A

15,000 feet

27
Q

What are the two modes of operation

with the cabin pressure control system in AUTO?

A

PRIMARY mode (predictive): uses FMS to schedule
cabin cruise altitude, and SECONDARY mode (reactive):
pressure altitude and vertical speed

28
Q

May both packs be operated in manual mode simultaneously?

A

No. The AFM limits manual pack operation to single pack.

29
Q

What is the function of the air conditioning units?

A

To decrease the air temperature

30
Q

How is the landing elevation manually set?

A

LDG ELEV switch to MAN, then UP/DN switch to set the elevation

31
Q

Name the conditions that would cause a pack to shut down.

A

Bleed failure, engine shutdown, engine starting, ditching selection, pack inlet overheat, compressor discharge overheat, pack discharge overheat/under pressure

32
Q

What happens to the outflow valves when the DITCHING switch/light is used?

A

OFVs commanded open, aircraft depressurizes,

OFVs driven closed

33
Q

What is the maximum pressure differential during initial landing (touchdown)?

A

1.0 PSI

34
Q

Under which condition would

AUX PRESS be used?

A

Every time the two packs are nonfunctioning and pressurization is required

35
Q

How is landing elevation set during QFE operations?

A

The LDG ELEV switch is selected to MAN,

and the LDG ELEV must be set to 0 ft

36
Q

What is the maximum pressure differential

during taxi and takeoff?

A

0.1 PSI

Global 6000 (18 decks)

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