Part66EASA Module11A.4.3. Air Conditioning & Cabin Pressurisation (ATA21)Pressurisation (1of2)

Request edit access

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Syllabus: Pressurisation systems; Control and indication including control and safety valves; Cabin pressure controllers.

Email *

As an aircraft descends from cruising altitude (34,000ft), the cabin altitude must.
*

1 point

Option A. decrease.

Option B. increase.

Option C. stay the same.

The signal line between the controller and discharge valve is leaking. This will cause.
*

1 point

Option A. it will not effect on cabin pressure.

Option B. the cabin pressure to increase.

Option C. the cabin pressure to decrease.

The basic system of cabin pressurisation is to arrange a constant.
*

1 point

Option A. inlet and outlet.

Option B. inlet and vary the outlet.

Option C. outlet and vary the inlet.

The purpose of the differential capsule in a pressure controller is to control.
*

1 point

Option A. the rate of pressurisation.

Option B. cabin air flow.

Option C. cabin differential pressure.

With a pressurised aircraft at maximum differential pressure and a cabin pressure increase occurs, the
differential capsule in the pressure controller will.
*

1 point

Option A. have a constant mass flow.

Option B. let pressurisation to be switched off until leaks cause a drop in pressure.

Option C. let all pressurising air to be spilled overboard.

A comfortable rate of cabin altitude climb for passengers is.
*

1 point

Option A. 500 ft. per min.

Option B. 100 ft. per min.

Option C. 300 ft. per min.

Before carrying out a ground pressure check,.
*

1 point

Option A. check all pitot and static lines are fitted.

Option B. set altimeter to QNH.

Option C. turn on all instruments.

On touch-down of aircraft.
*

1 point

Option A. the outflow valve will be shut.

Option B. the cabin pressure will be zero.

Option C. the outflow valve will be fully open.

When pressurising the aircraft on the ground for test purposes, internal doors, cupboards etc. must be.
*

1 point

Option A. removed.

Option B. all open.

Option C. all closed.

Question Number. 10. Prior to conducting a ground pressurisation test, it is necessary to.
*

1 point

Option A. reset/disable the pressure controller.

Option B. set QFE.

Option C. disconnect the emergency pressure relief valve.

In the flightdeck of a pressurised aircraft, there is a gauge that shows.
*

1 point

Option A. cabin pressure altitude.

Option B. aircraft altitude.

Option C. cabin differential pressure.

Cabin differential pressure is the pressure difference between.
*

1 point

Option A. 8,000ft and standard barometric pressure.

Option B. sea level air pressure and indicated dynamic pressure in the cabin.

Option C. the pressure inside the aircraft and the ambient air pressure.

If the pressure controller is set to 0 ft.
*

1 point

Option A. maximum differential is reached immediately after take-off.

Option B. cabin will not pressurise.

Option C. cabin remains at sea level untill maximum differential.

During a pressurisation check at maximum differential, if the engines are shut-down.
*

1 point

Option A. aircraft remains pressurised until the dump valve opens.

Option B. outflow valve opens immediately.

Option C. cabin ROC indicator gives indication of cabin seal efficiency.

Cabin pressure is maintained by.
*

1 point

Option A. controlling the supply of air to the cabin.

Option B. controlling the output of the compressor.

Option C. controlling the amount of air discharged from the cabin.

Control of rate of change of cabin pressure is.
*

1 point

Option A. most important in descent.

Option B. most important in ascent.

Option C. equally important in descent and ascent.

Cabin rate of climb is shown by.
*

1 point

Option A. a double scale on the aircraft.

Option B. warning lights.

Option C. a special instrument.

During normal pressurized climb following take-off.
*

1 point

Option A. the cabin R.O.C. is less than ambient R.O.C.

Option B. the cabin R.O.C. is more than ambient R.O.C.

Option C. the differential pressure is constant.

Cabin differential pressure is the difference between.
*

1 point

Option A. 8,000 ft and sea level.

Option B. cabin pressure and ambient pressure.

Option C. I.S.A. conditions and aircraft altitude.

Cabin altitude in pressurized flight is the.
*

1 point

Option A. pressure altitude of the cabin as corrected to mean sea level I.S.A. conditions.

Option B. altitude corresponding to cabin pressure irrespective of the altitude for the aircraft.

Option C. altitude at which cabin altitude equals outside air pressure.

When an aircraft has reached max. diff. and is at constant level (altitude) the system allows for.
*

1 point

Option A. constant mass flow.

Option B. pressurisation to be switched off until leaks cause a drop in pressure.

Option C. all pressurising air to be spilled overboard.

The control of ventilating and pressurising air released to atmosphere is achieved by a.
*

1 point

Option A. pressure controller/dump valve combination.

Option B. pressure controller/discharge valve combination.

Option C. discharge valve/inwards relief valve combination.

Rate of change of cabin pressure is most noticeably shown on a.
*

1 point

Option A. cabin V.S.I.

Option B. cabin pressure gauge.

Option C. cabin altimeter.

Pressurisation control ensures that.
*

1 point

Option A. at operational altitude the cabin altitude is below 10,000 ft.

Option B. pressurisation does not start before aircraft is above 8,000 ft.

Option C. the cabin is always maintained at sea level.

'Pitot' and 'Static' lines during a cabin pressure test should be.
*

1 point

Option A. disconnected.

Option B. connected.

Option C. cross connected.

If the cabin pressure fails to reach its maximum cabin pressure differential the.
*

1 point

Option A. discharge valve should be adjusted.

Option B. discharge valve should be adjusted.

Option C. pressure controller should be adjusted.

When the aircraft has reached its maximum cabin pressure differential the.
*

1 point

Option A. discharge valve closes.

Option B. discharge valve opens.

Option C. mass flow ceases through the cabin.

Submit

Clear form

This form was created inside of amepreparation.com.

Does this form look suspicious? Report

Forms