Air Conditioning

Question 1

Both PAC FAIL light illuminate after takoff

Answer 1

RAM air switch in OPEN position

Question 2

PACK FAIL light

Answer 2

Indicates high temperature 425°F at the compressor outlet. Pack pressure regulator/shutoff valve closes simultaneously

Question 3

DUCT OVERHEAT light

Answer 3

Temperature prior to mixing chamber 245°F

Question 4

DUCT LEAK light

Answer 4

Bleed-air leak in the bleed ducts with temperature exceeding 195°F

Question 5

BLEED OVEHEAT light

Answer 5

Overheat condition in bleed duct with temperature exceeding 600°F. The engine bleed shutoff valve and HP bleed shutoff valve close simultaneously

Question 6

The EMB 120 is air conditions by

Answer 6

Environmental control packs

Question 7

On the ground an air conditioner malfunction (PAC FAIL) would probably be caused by

Answer 7

Failure of the ground cooling fan

Question 8

Should there be a PACK FAIL malfunction, the system may be restarted by

Answer 8

Turning the pack control selector OFF then ON

Question 9

The conditioned air temperature is controlled by

Answer 9

The mixture of cold air form the turbine and blee air

Question 10

The temperature an be read for both the cockpit and the cabin

Answer 10

True

Question 11

With the air conditioning system in AUTO mode the temperature range can be controlled within

Answer 11

60°F-90°F

Question 12

The manual mode of operation can be used at pilot’s discretion

Answer 12

False

Question 13

Should the air conditioning system malfunction and cause DUCT OVERHEAT, the pilot will be warned by a

Answer 13

Amber light

Question 14

Air distribution ratio between cockpit and cabin is

Answer 14

40-60

Question 15

To increase air flow to the cabin the system has

Answer 15

Two recirculation fans