Gleim Unit 2

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What causes magnetic deviation?

Magnetic Fields within the aircraft distorting the lines of magnetic force. Magnetic fields produced by metals and electrical accessories in the airplane disturb the compass needle and produce errors.

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 Due to the Northerly turn error in the NH, a magnetic compass will initally indicate a turn toward the West if a right (east turn) is entered from a North heading

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 and decleration 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

Magnetic Dip

Downward pull of earth's magnetic field on a compass. More severe at the poles and zero at the magnetic equator.

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

Only in straight and level unaccelerated flight. During acceleration, deceleration, or turns, the compass card will dip and cause false readings.

In the northern hemisphere, a magnetic compass will normally indicate a turn toward the north if:

an aircraft is accelerated while on an East or West heading In the Northern hemisphere, acceleration/deceleration error occurs when on an East or West heading Remember ANDS: Accelerate North, Decelerate South

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

the aircraft is decelerated while on a West Heading In the NH, a magnetic compass will normally indicate a turn toward the south if an airplane is decelerated while on an East of West heading


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