Measurement And Air Data Parameters 3

Question 1

If OAT increases whilst maintaining a constant CAS and flight level:

Answer 1

Mach number remains constant.

Question 2

If, with the automatic flight control system (AFCS) engaged, the pilot presses the force trim release button to allow a manual input to the flight controls:

Answer 2

the spring units will become ineffective.

Question 3

In standard atmosphere, when descending at constant CAS:

Answer 3

TAS decreases.

Question 4

In the absence of position and instrument errors, CAS is equal to:

Answer 4

IAS.

Question 5

In the absence of position and instrument errors, IAS is equal to:

Answer 5

CAS.

Question 6

In the absence of position and instrument errors:

Answer 6

IAS = CAS.

Question 7

The automatic synchronisation function of an autopilot control system: 1 - operates only when the autopilot is engaged 2 - prevents the aircraft’s control system from jerking when disengaging the autopilot 3 - prevents the aircraft’s control system from jerking when engaging the autopilot The combination regrouping all the correct statements is:

Answer 7

3

Question 8

The command bars of a flight director:

Answer 8

may be displayed when flying manually.

Question 9

The compressibility correction to CAS to give EAS: 1 - may be positive 2 - is always negative 3 - depends on Mach number only 4 - depends on pressure altitude only The combination regrouping all the correct statements is:

Answer 9

2, 3.

Question 10

The parameter that determines the relationship between EAS and TAS is:

Answer 10

density altitude.

Question 11

True Air Speed (TAS) is obtained from Equivalent Air Speed (EAS) by correcting for:

Answer 11

density error.

Question 12

True Air Speed (TAS) is obtained from Indicated Air Speed (IAS) by correcting for the following errors: 1 - instrument 2 - position 3 - compressibility 4 - density The combination regrouping all the correct statements is:

Answer 12

1, 2, 3, 4.

Question 13

When climbing at a constant CAS in a standard atmosphere: 1 - TAS decreases 2 - TAS increases 3 - Mach number increases 4 - Mach number decreases The combination regrouping all the correct statements is:

Answer 13

2, 3.

Question 14

When descending at a constant Mach number:

Answer 14

CAS increases.

Question 15

When flying in cold air (colder than standard atmosphere), indicated altitude is:

Answer 15

higher than the true altitude.

Question 16

When flying in cold air (colder than standard atmosphere), the altimeter will:

Answer 16

overestimate.

Question 17

When flying in warm air (warmer than standard atmosphere), indicated altitude is:

Answer 17

lower than the true altitude.

Question 18

With EAS and density altitude, we can deduce:

Answer 18

TAS.

Question 19

With EAS and pressure altitude (Zp), we can deduce:

Answer 19

CAS.

Question 20

During a climb, the total pressure probe of the airspeed indicator becomes blocked; if the pilot maintains a constant indicated airspeed, the true airspeed:

Answer 20

decreases until reaching the stall speed.

Question 21

An airspeed indicator includes a capsule; inside this capsule is:

Answer 21

total pressure and outside is static pressure.

Question 22

An aircraft is equipped with one altimeter that is compensated for position error and another one altimeter that is not. Assuming all other factors are equal, during a straight symmetrical flight:

Answer 22

the greater the speed, the greater the error between the two altimeters.

Question 23

An aneroid capsule: 1 - measures differential pressure 2 - measures absolute pressure 3 - is used for low pressure measurement 4 - is used for very high pressure measurement The combination regrouping all the correct statements is:

Answer 23

2, 3.

Question 24

An altimeter contains one or more aneroid capsules. Inside these capsules is:

Answer 24

a very low residual pressure and outside is static pressure.

Question 25

As a result of the failure of the central air data computer (CADC), the inertial navigation system (INS) will no longer provide information about:

Answer 25

the wind direction and speed.

Question 26

An outer loop Automatic Flight Control System (AFCS), is a system which:

Answer 26

contains a parallel actuator which provides control through 100% of the control range and moves both the control inputs and the cockpit control stick.

Question 27

The “guidance” functions of a autopilot consist in:

Answer 27

monitoring the movements of the centre of gravity in the three dimensions of space.

Question 28

The altimeter of your aircraft indicates 10000 ft with a subscale-setting of 1013,25 mb. OAT is +5°C. The pressure altitude of the aircraft is:

Answer 28

10000 ft.

Question 29

The altimeter indicates true altitude:

Answer 29

in standard atmosphere only.

Question 30

The maximum TAS is obtained at:

Answer 30

the Flight Level at which simultaneously CAS = VMO and M = MMO.

Question 31

The input data of an ADC are: 1 - OAT 2 - TAT 3 - static pressure 4 - total pressure The combination regrouping all the correct statements is:

Answer 31

2, 3, 4.

Question 32

During a final approach, if the flight director system is engaged in the G/S mode (holding of ILS Glide Slope), the position of the horizontal command bar indicates:

Answer 32

the correction on the pitch to be applied to join and follow the ILS Glide Slope.

Question 33

Given: Mach number M = 0.70 measured impact temperature = - 48 °C the recovery factor (Kr) of the temperature probe = 0.85 The OAT is:

Answer 33

• 65 °C

Question 34

During a descent at a constant Mach number below the tropopause in ISA conditions:

Answer 34

IAS and TAS increase.

Question 35

During a descent at a constant Mach number below the tropopause in ISA conditions:

Answer 35

CAS and TAS increase.

Question 36

During a descent at a constant IAS below the tropopause in ISA conditions:

Answer 36

Mach number and TAS decrease.

Question 37

During a climb at a constant Mach number below the tropopause in ISA conditions:

Answer 37

IAS and TAS decrease.

Question 38

If the pitot tube ices up during a flight, the affected equipment(s) is (are): 1 - the altimeter 2 - the variometer 3 - the airspeed indicator The combination regrouping all the correct statements is:

Answer 38

3.

Question 39

If, during a descent:
- the pneumatic altimeter reading is constant
- the vertical speed indicator shows zero
- the IAS is increasing
the most likely explanation is that:

Answer 39

the static ports are completely blocked.

Question 40

If the pitot tube becomes blocked during a descent, the airspeed indicator:

Answer 40

under-reads.