Pressurization System

Question 1

What provides for a comfortable environment in the aircraft, also as a life support system during high altitude flights.

Answer 1

Pressurization System

Question 2

The purpose of the pressurization system is to maintain a cabin altitude pressure that provides _______ and _______ for the crew and passengers.

Answer 2

1. Comfort

2. Safety

Question 3

Pressurization is accomplished by maintaining constant ______into the cabin and regulating the amount of air _______ the aircraft.

Answer 3

1. airflow

2. Exiting

Question 4

What are the three different operating ranges of the pressurization system.

Answer 4

1. Unpressurized range (cabin altitude is the same as the aircraft altitude)
2. Isobaric Range (Aircraft cabin pressurization or altitude remain the same regardless of the aircraft’s altitude)
3. Differential Pressure (The operating range that extends from where the isobaric range stops)

Question 5

This pressure is designed to prevent structural damage by not exceeding the aircrafts maximum differential pressure

Answer 5

Differential Pressure Range

Question 6

What is the diff pressure cabin altitude of 5000 ft. / airplane altitude of 18000 ft?

Answer 6

5.0

Question 7

A typical aircraft pressurization system consists of the following components to regulate the amount of air entering and exiting the aircraft:

Answer 7

Outflow/thrust recovery valves
Overpressure safety valve
Negative pressure relief valve

Question 8

The purpose of the outflow/thrust recovery valve is to :

Answer 8

Regulate cabin air existing in the aircraft

Question 9

The outflow/thrust recovery valves are set to FULL OPEN during:

Answer 9

Ground operation and unpressurized flights

Question 10

The outflow/thrust recovery valves are positioned to CLOSED,:

Answer 10

After takeoff or initiation of pressurized flight

Question 11

Positioning the outflow/thrust recovery valves to CLOSED allows the cabin pressure to ___________

Answer 11

increase

Question 12

The pressurization component that prevents the cabin pressure from exceeding the design limits of the aircraft

Answer 12

Overpressure safety valve

Question 13

Overpressure safety valves are located on one of these two places

Answer 13

1. On the outflow valve

2. On aircraft fuselage sides

Question 14

The pressurization component prevents the fuselage external pressure from exceeding the fuselage internal pressure

Answer 14

Negative pressure relief valve

Question 15

Negative pressure relief valves, if not used to properly keep the external pressure from exceeding the fuselage internal pressure, could lead to:

Answer 15

Serious structural damage or the fuselage to collapse

Question 16

Negative pressure relief valves are located in one of these two locations:

Answer 16

1. On the fuselage

2. Incorporated in the outflow valves

Question 17

What is the purpose of system indicators?

Answer 17

To represent the status of the system

Question 18

Cabin altitude meter (outer scale) and cabin differential meter (inner scale) are measured using a:

Answer 18

Cabin Altimeter

Question 19

Cabin rate of climb indicators are also known as

Answer 19

Vertical Velocity Indicators (VVI)

Question 20

Rate of change (VVI) displays the rate of change in cabin altitude and are normally reported in _______

Answer 20

Feet per minute (FPM)

Question 21

The Cabin Altitude warning system consists of:

Answer 21

Warning bells (horns) or annunciator lights and relays to activate the cabin lights to full bright or to deploy automatic passenger oxygen masks

Question 22

The cabin altitude warning system activates whenever:

Answer 22

The cabin altitude exceeds a predetermined limit

Question 23

The Control System Automatic Controller (AUTO) mode:

Answer 23

1. Maintains control of the cabin altitude throughout the isobaric range
2. Prevents the cabin from exceeding the structural design limit
3. Maintains the cabin altitude below a preprogrammed altitude

Question 24

The Control System Semi-automatic (SEMI-AUTO) mode:

Answer 24

Allows manual selection of the cabin altitude and rate of change

Question 25

The Control System Manual Control:

Answer 25

1. Overrides the features and function of the automatic controller
2. Manipulates the outflow valve directly from your inputs
3. Gives the operator direct control of the amount of air exiting the aircraft