Cross Country Flight Planning 7
PA.VI.A.K2 Magnetic compass errors.
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1. The angular difference between true north and magnetic north is
Answer (B) is correct. (FAA-H-8083-25B Chap 16) The angular difference between true and magnetic north is referred to as magnetic variation.
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2. In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if
Answer (B) is correct. (FAA-H-8083-25B Chap 8) In the Northern Hemisphere, a magnetic compass normally initially indicates a turn toward the east if a left (west) turn is entered from a north heading.
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3. What should be the indication on the magnetic compass as you roll into a standard rate turn to the right from a south heading in the Northern Hemisphere?
Answer (B) is correct. (FAA-H-8083-25B Chap 8) When on a southerly heading in the Northern Hemisphere and you roll into a standard rate turn to the right, the magnetic compass indication precedes the turn, showing a greater amount of turn than is actually occurring.
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4. In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when
Answer (B) is correct. (FAA-H-8083-25B Chap 8) In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the south if an airplane is decelerated while on an east or west heading.
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5. In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the west if
Answer (A) is correct. (FAA-H-8083-25B Chap 8) Due to the northerly turn error in the Northern Hemisphere, a magnetic compass will initially indicate a turn toward the west if a right (east) turn is entered from a north heading.
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6. In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate
Answer (A) is correct. (FAA-H-8083-25B Chap 8) Acceleration and deceleration errors on magnetic compasses do not occur when on a north or south heading in the Northern Hemisphere. They occur on east and west headings.
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7. Deviation error of the magnetic compass is caused by
Answer (B) is correct. (FAA-H-8083-25B Chap 8) The compass in an airplane will align with any magnetic field. Magnetic fields created by metals and the electrical system of the aircraft will hinder the ability of the compass to align with the Earth’s magnetic field. This phenomenon is known as deviation. Since deviation error varies by heading, a compass correction card is fitted, providing the pilot with the deviation for a given heading.
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8. During flight, when are the indications of a magnetic compass accurate?
Answer (A) is correct. (FAA-H-8083-25B Chap 8) During flight, the magnetic compass indications can be considered accurate only when in straight-and-level, unaccelerated flight. During acceleration, deceleration, or turns, the compass card will dip and cause false readings.
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9. Deviation in a magnetic compass is caused by the
Answer (C) is correct. (FAA-H-8083-25B Chap 8) Magnetic fields produced by metals and electrical accessories in the airplane disturb the compass needle and produce errors. These errors are referred to as compass deviation.
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10. In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if
Answer (A) is correct. (FAA-H-8083-25B Chap 8) In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if an airplane is accelerated while on an east or west heading.
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