11.5 Instruments/Avionics Systems

Question 1

You fly from cardiff which has an actual pressure of 1013hcpa to ending indicated altitude of 10000ft, what is your altitude over ending when sea level pressure is 1025?

Answer 1

1360

Question 2

Which of the following statements is true concerning data calculations?

Answer 2

The analogue ADC calculates all outspun 3 modules at the same time.

Question 3

What does the slaving annunciation of a compass system indicate?

Answer 3

Indicates the difference between flux valve heading and the heading indication.

Question 4

Which statement is true about compass compensation?

Answer 4

The deviation is recorded on the ground during a 360 turn

Question 5

Which components are used to measure the motions along the aircraft axis?

Answer 5

Rate gyro

Question 6

What is the purpose of stick shaker?

Answer 6

To simulate the effect of a real stall on the flight controls.

Question 7

GIVEN AN AIRCRAFT WITHOUT A PRESSUISED CABIN, ON WHICH A LEAK HAS OCCURRED IN THE STATIC SYSTEM WHILE THE AIRCRAFT IS IN LEVEL FLIGHT, WHICH INDICATIONS DO YOU GET?

Answer 7

ALTIMITER (ALT) SHOWS SLIGHTLY INCREASING VALUES, VERTICAL SPEED INDICATION (VSI) SHOWS CORRECT DATA
AIRSPEED INDICATOR (ASI) SLIGHTLY HIGHER
AIRSPEED INDICATORS SHOW DECREASING VALUES.

Question 8

CONCERNING PITOT STATIC SYSTEMS, WHAT HAPPENS IF THERE IS AN INCREASE OF WATER AND THE TRAPS ARE ALREADY FULL?

Answer 8

INSTRUMENTS FLUCTUATE, VERT SPEED AND ALT NORMAL FUNCTION, AIRSPEED IS ZERO

Question 9

WHICH OF THE FOLLOWING STATEMENTS ARE TRUE FOR THE PRESSURE TRANSDUCERS USED IN ADC’S?

Answer 9

In a digital ADC same tranducer type is used for static and pitot pressure

Question 10

AN AIRCRAFT IS ON THE GROUND AND THE ALTIMITER IS SET TO QNH PRESSURE, WHAT HEIGH IS DISPLAYED?

Answer 10

GROUND SEA LEVEL, IF QFE WOULD = 0

Question 11

WHICH IS CORRECT ABOUT THE ADIRU?

Answer 11

THE ADIRU HAS NO PRESSURE TRANSDUCERS BUT THE COMPUTATIONAL PART OF A DADC AND AN IRU ARE INTERGRATED

Question 12

WHAT DOES A VERTICAL GYRO REQUIRE AN ERECTION SYSTEM?

Answer 12

ENSURE GYRO AXIS IS VERTICAL WITH THE REFERENCE TO SURFACE OF THE EARTH

Question 13

HOW DOES THE STICK SHAKER MOVE THE CONTROL COLOUM?

Answer 13

A MOTOR CAUSES THE CONTROL COLOUM TO VIBRATE

Question 14

WHAT IS DEVIATION?

Answer 14

IT IS THE ANGLE BETWEEN THE MAGNETIC NORTH AND COMPASS NORTH.

Question 15

WHAT IS THE FUNCTION OF THE SSEC CIRCUIT IN AN ADC?

Answer 15

THE SSEC CARRIES OUT A TEMPERAURE COMPENSATION FOR THE MACH MODULE.

Question 16

WHY IS THERE A DIFFERENCE BETWEEN SAT AND TAT INDICATION?

Answer 16

DURING FLIGHT THE TAT IS HIGHER THAN THE SAT DUE TO THE EFFECT OF RAM RISE.

Question 17

THE ALTIMITER IS SET TO THE STANDARD REFERENCE PRESSURE AND THE ACTUAL SEA LEVEL PRESSURE DECREASES DURING FLIGHT, WHICH IS TRUE?

Answer 17

THE PILOT MUST ADJUST THE BARO SETTING TO THE NEW SEA LEVEL PRESSURE.

Question 18

WHICH IS INDICATED BY PNEUMATIC AIRSPEED INDICATORS?

Answer 18

INDICATED AIR SPEED (IAS)

Question 19

Which indications happen if the pitots are blocked?

Answer 19

Airspeed indicators show decreasing values.