Air Conditioning/Pneumatics

Question 1

The D328Jets useful range is approximately __________ with the use of auxiliary fuel tanks.

Answer 1

1,500 NM

Question 2

What annunciates the status of the main cabin door, galley service door, and baggage compartment door?

Answer 2

Dual Proxy Sensors

Question 3

What annunciates the status of the two emergency exit doors?

Answer 3

Single Proxy Sensors

Question 4

The external air door in the tail is annunciated by?

Answer 4

A microswitch

Question 5

The ground air door is annunciated by?

Answer 5

A microswitch

Question 6

How many packs does the airplane have?

Answer 6

2

Question 7

For air conditioning bleed air is initially tapped from?

Answer 7

Low Pressure Bleed Port for high power settings and High Pressure Bleed Port for low power settings.

Question 8

After bleed air is tapped from either the high or low pressure ports it then passes through?

Answer 8

A Pressure Regulating Shutoff Valve (PRSOV)

Question 9

The Pressure Regulating Shutoff Valves (PRSOVs) are opened and closed by?

Answer 9

Via a bleed button on the overhead panel.

Question 10

After bleed air passes through the PRSOV’s, it then passes through?

Answer 10

A Flow Control Shutoff Valve (FCSOV), which lets air into the pack.

Question 11

The FCSOV’s are manually opened and closed by?

Answer 11

A PACK button on the overhead panel.

Question 12

The FCSOV’s will automatically close if there is?

Answer 12

1. Over-pressure

2. Over-temperature

Question 13

The heat exchanger receives cooling air from the outside via either?

Answer 13

An electric fan below 120 KIAS, Ram Air above 120 KIAS.

Question 14

After the air is conditioned/cooled it passes through?

Answer 14

The TCV (temperature control valve) which mixes hot air with the cooled air to maintain the desired temp.

Question 15

The TCV (temperature control valve) operates in either?

Answer 15

AUTO or MANUAL

Question 16

Pack air is sent to the cabin via what three ways?

Answer 16

1. Overhead Gasper Vents
2. Ceiling Ducts
3. Floor Ducts

Question 17

When operating the recirc fans in economy mode only ____% is pack air.

Answer 17

30%

Question 18

When operating the recirc fans in HIGH, _____% is pack air.

Answer 18

50%

Question 19

If a single pack is deferred the airplane is limited to FL____.

Answer 19

FL250.

Question 20

What type of outflow valve is on the airplane and where is it?

Answer 20

Electropneumatic Outflow Valve, Aft baggage compartment bulkhead.

Question 21

What happens when the guarded DUMP button is pressed?

Answer 21

It opens the Electropneumatic Outflow Valve, and then closes again at 14,500’.

Question 22

If the automatic pressurization system fails, pressurization can be controlled?

Answer 22

Manually via a pneumatic outflow valve located on the forward pressure bulkhead. This requires no electrical power.

Question 23

Switching the pressurization mode from AUTO to MAN via the overhead panel switch does what?

Answer 23

Closes the rear Electropneumatic Outflow Valve (to prevent it from trying to compensate from the changes made to the forward outflow valve.)

Question 24

When the aircraft is on the ground with idle power selected what prevents it from pressurizing?

Answer 24

An electric vacuum pump installed at the forward outflow valve.

Question 25

How/When does the aircraft begin pressurization?

Answer 25

When takeoff power is applied the vacuum pump de-energizes and allows the forward outflow valve to close.

Question 26

What altitude does the airplane initially pressurize to after takeoff?

Answer 26

-300 feet of field elevation

Question 27

The auto pressurization systems maintains takeoff field for how long?

Answer 27

Ten minutes.

Question 28

On landing what triggers the pressurization system to equalize pressure?

Answer 28

WOW

Question 29

What cools the avionics?

Answer 29

An EFIS fan and avionics fan.