Question Bank

1. On board a/c, true altitude shown from:

2. A compass swing is used to

3. An aircraft is taking of on a runway heading 0450, in still air, with a compass having 00 deviation. The runway is on an agonic line. What are the northerly turning errors (northern hemisphere)?

4. In a Remote Indicating Compass, what component feeds the Amplifier?

5. When descending through an isothermal layer at constant CAS, what does the TAS do?

6. If while level at FL 270, at a constant CAS, temperature falls, what happens to the Mach No

7. Pressure altitude may be defined as

8. To obtain heading information from a Gyro Stabilised platform, the gyros should have

9. In a DGI what error is caused by the gyro movement relative to the earth?

10. The advantages of an ADC over a traditional pitot - static system (list) 1. Position and compressibility correction. 2. reduced lag 3. ability to supply many instruments 4. ability to act as an altimeter following failure. 5. (apparently all the answer bar one had 4 as a correct answer)

11. The properties of a gyro are: 1. mass 2. rigidity 3. inertia 4. precession 5. rotational speed

12. A vibrator may be fitted to an altimeter to overcome

13. From where does the air data computer (ADC) obtain aircraft altitude?

14. The gravity erecting device on a vertical gyro is used on which instrument;

15. A DGI has

16. Total Air Temp is always ________ than Static Air Temp and the difference varies with _______ __.

17. What is the Schuler period?

18. The pressure measured at the forward face of the Pitot probe is

19. A radio altimeter is

20. Which of the following will effect a direct reading compass? 1. ferrous metals 2. non-ferrous metals 3. electrical equipment

21. An aircraft is flying at constant indicated altitude, over a cold airmass. The altimeter reading will be

22. When turning through 900 at constant attitude and bank, a classic Artificial Horizon indicates

23. During a descent at constant CAS and total temperature, the mach no:

24. Sound propagates at a speed which depends only on

25. Which instrument has a 2° rotation in the horizontal axis?

26. If the pitot tube is leaking (and the pitot drain is blocked) in a non-pressurised a/c, the ASI will

27. The pitot tube of an ASI gives a direct reading of

28. An a/c is travelling at 100 kts forward speed on a 30 glideslope. What is its rate of descent?

29. If the left static vent is blocked, and the right static vent is clear. What will the altimeter read if the aircraft maintains constant level?

30. An aircraft is accelerating to take-off on a runway with a QDM of 045°. Which way does the DRMC move, if the aircraft is in the Northern Hemisphere?

31. The difference between Magnetic North and True North can be derived by

32. You commence a rate 2 turn from south-east to south-west, in the Northern Hemisphere. On what heading do you stop the turn?

33. A machmeter measures the ratio of;

34. Machmeter readings are subject to which of the following errors

35. An aircraft turns right, through 900, onto North, at 48N, using a direct indicating compass. The aircraft is turning at rate 2. What heading should the aircraft roll out on?

36. An aircraft fitted with a DRMC is landing in a southerly direction, in the Southern Hemisphere. What indications will be seen on the DRMC?

37. The Directional Gyro Indicator (DGI) can

38. An aircraft, in the southern hemisphere, is decelerating to land on a westerly heading. The direct reading magnetic compass will indicate

39. A factor giving an error on a direct indicating compass would be

40. The Inertial Strapdown Unit of an IRS is programmed with co-ordinates during alignment in order to

41. The white arc on the ASI indicates

42. What is a radio altimeter used for?

43. What does a radio altimeter, for an aircraft in the landing configuration, measure

44. At constant weight, regardless of altitude, an aircraft always lifts off at a constant:

45. A 2 axis gyro, measuring vertical changes will have

46. The torque motor of a gyro stabilised magnetic compass

47. An aircraft is flying a true track of 360° from 5° south to 5° north. What is the change in apparent wander rate

48. The Turn Indicator is a useful gyroscopic instrument. When used in association with an attitude indicator will show: 1. angular velocity about the yaw axis 2. direction of turn 3. angular velocity about true vertical axis 4. speed of turn

49. What is the maximum drift of a gyro, due to earth rate

50. The component(s) used to align an inertial strap-down unit in the horizontal plane is/are