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Question 1 of 62
1. Question
An aircraft magnetic compass is swung to update the compass connection card when
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Question 2 of 62
2. Question
Which of the following operating mechanisms would be found in a hydraulic pressure gauge?
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Question 3 of 62
3. Question
What is the fixed line mark attached to the compass bowl of a magnetic compass called?
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Question 4 of 62
4. Question
Which of the following will cause inaccuracies in a magnetic compass that may be compensated for by an aircraft mechanic?
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Question 5 of 62
5. Question
What will be the result if the instrument static pressure line becomes disconnected inside a pressurized cabin during cruising flight?
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Question 6 of 62
6. Question
The maximum deviation (during level flight) permitted in a compensated magnetic direction indicator installed on an aircraft certificated under 14 CFR Part 23 is
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Question 7 of 62
7. Question
Magnetic compass bowls are filled with a liquid to
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Question 8 of 62
8. Question
Instrument static system leakage can be detected by observing the rate of change in indication of the
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Question 9 of 62
9. Question
The maximum altitude loss permitted during an unpressurized aircraft instrument static pressure system integrity check is
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Question 10 of 62
10. Question
Which statement regarding an aircraft instrument vacuum system is true?
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Question 11 of 62
11. Question
When an aircraft altimeter is set at 29.92 “Hg on the ground, the altimeter will read
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Question 12 of 62
12. Question
Which of the following instrument discrepancies could be corrected by an aviation mechanic?
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Question 13 of 62
13. Question
Which of the following instrument discrepancies would require replacement of the instrument?
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Question 14 of 62
14. Question
Which instrument condition is acceptable and would not require correction?
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Question 15 of 62
15. Question
A barometric altimeter indicates pressure altitude when the barometric scale is set at
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Question 16 of 62
16. Question
At sea level, when the average atmospheric pressure is 14.7 psi, the barometric pressure is
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Question 17 of 62
17. Question
A Bourdon tube instrument may be used to indicate
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Question 18 of 62
18. Question
A turn coordinator instrument indicates
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Question 19 of 62
19. Question
Aircraft temperature thermocouple leads may
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Question 20 of 62
20. Question
A synchro transmitter is connected to a synchro receiver
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Question 21 of 62
21. Question
The operation of an angle of attack indicating system is based on detection of differential pressure at a point where the airstream flows in a direction.
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Question 22 of 62
22. Question
Turbine engine exhaust gas temperatures are measured by using
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Question 23 of 62
23. Question
Fuel flow transmitters are designed to transmit data
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Question 24 of 62
24. Question
Which of the following causes of aircraft magnetic compass inaccuracies may be compensated for by mechanics?
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Question 25 of 62
25. Question
Who is authorized to repair an aircraft instrument?
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Question 26 of 62
26. Question
A certificated mechanic with at least an airframe rating may perform
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Question 27 of 62
27. Question
What does a reciprocating engine manifold pressure gauge indicate when the engine is not operating?
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Question 28 of 62
28. Question
The requirements for testing and inspection of instrument static pressure systems required by 14 CFR §91.411 are contained in
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Question 29 of 62
29. Question
Which condition would be most likely to cause excessive vacuum in a vacuum system?
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Question 30 of 62
30. Question
Data transmitted between components in an EFIS are converted into
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Question 31 of 62
31. Question
The function of a CRT in an EFIS is to
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Question 32 of 62
32. Question
The function of a symbol generator (SG) in an EFIS is to
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Question 33 of 62
33. Question
The function of a display controller in an EFIS is to
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Question 34 of 62
34. Question
A radar altimeter determines altitude by
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Question 35 of 62
35. Question
Resistance-type temperature indicators using Wheatstone bridge or ratiometer circuits may be used to indicate the temperatures of which of the following?
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Question 36 of 62
36. Question
When flags such as NAV, HDG, or GIS are displayed on an HSI, the indication is
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Question 37 of 62
37. Question
Instrument panel shock mounts absorb
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Question 38 of 62
38. Question
Which procedure should you use if you find a vacuum-operated instrument glass loose?
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Question 39 of 62
39. Question
A radar altimeter indicates
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Question 40 of 62
40. Question
Which instruments are connected to an aircraft’s pitot-static system?
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Question 41 of 62
41. Question
Which of the following instruments will normally have range markings?
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Question 42 of 62
42. Question
How would an airspeed indicator be marked to show the best rate-of-climb speed (one engine inoperative)?
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Question 43 of 62
43. Question
The green arc on an aircraft temperature gauge indicates
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Question 44 of 62
44. Question
What must be done to an instrument panel that is supported by shock mounts?
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Question 45 of 62
45. Question
What marking color is used to indicate if a cover glass has slipped?
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Question 46 of 62
46. Question
Aircraft instruments should be marked and graduated in accordance with
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Question 47 of 62
47. Question
Aircraft instrument panels are generally shock-mounted to absorb
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Question 48 of 62
48. Question
The method of mounting aircraft instruments in their respective panels depends on the
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Question 49 of 62
49. Question
How is a flangeless instrument case mounted in an instrument panel
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Question 50 of 62
50. Question
Cases for electrically operated instruments are made of
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Question 51 of 62
51. Question
When installing an instrument in an aircraft, who is responsible for making sure it is properly marked?
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Question 52 of 62
52. Question
Where may a person look for the information necessary to determine the required markings on an engine instrument?
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Question 53 of 62
53. Question
A certificated mechanic with airframe and powerplant ratings may
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Question 54 of 62
54. Question
The red radial lines on the face of an engine oil pressure gauge indicates
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Question 55 of 62
55. Question
A certificated mechanic may perform
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Question 56 of 62
56. Question
An aircraft instrument panel is electrically bonded to the aircraft structure to
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Question 57 of 62
57. Question
How many of the following are controlled by gyroscopes?
- Altitude indicator.
- Heading indicator.
- Turn needle of the turn-and-slip indicator.
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Question 58 of 62
58. Question
The lubber line on a directional gyro is used to
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Question 59 of 62
59. Question
Which instruments are connected to an aircraft’s static pressure system only?
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Question 60 of 62
60. Question
When an unpressurized aircraft’s static pressure system is leak checked to comply with the requirements of 14 CFR §91.411, what aircraft instrument may be used in lieu of a pitot-static system tester?
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Question 61 of 62
61. Question
If a static pressure system check reveals excessive leakage, the leak(s) may be located by
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Question 62 of 62
62. Question
When performing the static system leakage check required by 14 CFR §91.411, the technician utilizes
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