Airplane Systems (Magnetic Compass)

On a turn from south:

The compass exaggerates the rate of turn. When starting a turn from a southerly heading, the compass leads the turn or exaggerates the rate of turn.

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?

The compass will indicate a turn to the right, but at a faster rate than is actually occurring. When making a turn from a southerly heading, the compass gives an indication of a turn in the correct direction, but leads the actual heading in the Northern hemisphere.

At the beginning of a turn from a northerly heading:

The compass will show a turn in the opposite direction. When starting a turn from a northerly heading, the compass lags behind the turn by a slight turn in the opposite direction.

The only north seeking instrument in a typical training airplane is:

The magnetic compass. The magnetic compass inherently seeks north.

In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if

Acceleration / deceleration error is most pronounced on a heading of east or west. ANDS, Accelerate, North, Decelerate, South.

The magnetic compass:

Is self powered. The magnetic compass is the simplest instrument in the panel and needs no outside power to operate.

On a turn from a northerly heading the compass will:

Lag behind the airplane. When starting a turn from a northerly heading, the compass lags behind the turn.

There is no acceleration/deceleration error on a heading of:

North or south. The magnetic dip and the forces of inertia cause magnetic compass errors when accelerating and decelerating on easterly and westerly headings.

During flight, when are the indications of a magnetic compass accurate?

Only in straight-and-level unaccelerated flight. To reduce errors, the magnetic compass should be read only when the aircraft is flying straight and level and at a constant speed.

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if

a left turn is entered from a north heading. On a northerly heading, if a left turn is made toward the west, the compass will initially indicate a turn in the opposite direction or toward the east.

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the west if

a right turn is entered from a north heading. On a northerly heading, if a right turn is made toward the east, the compass will initially indicate a turn in the opposite direction or toward the west.

Deviation error of the magnetic compass is caused by

certain metals and electrical systems within the aircraft. Magnetic fields caused by aircraft electronics and wiring can affect the accuracy of the magnetic compass - called compass deviation.

In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate

correctly when on a north or south heading. Acceleration / deceleration error is most pronounced on a heading of east or west. This error does not occur on a north or south heading.

Deviation in a magnetic compass is caused by the

magnetic fields within the aircraft distorting the lines of magnetic force. Magnetic interference, from magnetic fields produced by metals and electrical accessories in the aircraft, disturb the compass needles and produce additional error.

The angular difference between true north and magnetic north is

magnetic variation. Magnetic variation is the angular difference between the true, or geographic, north pole and the magnetic north pole at a given point.

In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when

the aircraft is decelerated while on a west heading. Acceleration / deceleration error is most pronounced on a heading of east or west. ANDS, Accelerate, North, Decelerate, South.