2.1 Compass Turning Error

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if a) an aircraft is decelerated while on a south heading b) an aircraft is accelerated while on a north heading c) a left turn is entered from a north heading

C : In the Northern Hemisphere, a magnetic compass normally initially indicates a turn toward the east if a left (west) turn is entered form a north heading

In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if a) an aircraft is decelerated while on an east or west heading b) a left turn is entered from a west heading c) an aircraft is accelerated while on an east or west heading

C : 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.

Deviation in a magnetic compass is caused by the a) presence of flaws in the permanent magnets of the compass b) difference in the location between true north and magnetic north c) magnetic fields within the aircraft distorting the lines of magnetic force

C : Magnetic fields produced by metals and electrical accessories in the airplane disturb the compass needle and produce errors. These errors are refereed to as compass deviation.

In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the west if a) a left turn is entered from a north heading b) a right turn is entered from a north heading c) an aircraft is accelerated while on a north heading

B : 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.

During flight, when are the indications of a magnetic compass accurate? a) only in a straight-and-level unaccelerated flight b) As long as the airspeed is constant c) During turns if the bank does not exceed 18 degrees

A : During flight, the magnetic compass indications can be considered accurate only when in a straight-and-level, unaccelerated flight. During acceleration, deceleration, or turns, the compass card will dip and cause false readings.

Deviation error of the magnetic compass is caused by a) northerly turning error b) certain metals and electrical systems within the aircraft c) the difference in location of true north and magnetic north

B : 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.

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? a) The compass will initially indicate a turn to the left b) The compass will indicate a turn to the right, but as a faster rate than is actually occurring c) The compass will remain on south for a short time, then gradually catch up to the magnetic heading of the airplane

B : 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.

In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate a) a turn momentarily b) correctly when on a north or south heading c) a turn toward the south

B: 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.

In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when a) a left turn is entered from an east heading b) a right turn is entered from a west heading c) the aircraft is decelerated while on a west heading

C: 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.