Aircraft Magnetism: DGCA Air Navigation questions

Question 1

European regulations EU (OPS-1) state that the maximum permissible deviations after compensation are:

Accepted Answer

One degree for a remote indicating compass, and ten degrees for a direct reading magnetic compass

Answer

Three degrees for a direct reading magnetic compass, and one degree for a remote indicating compass

Answer

Ten degrees for a remote indicating compass, and one degree for a direct reading magnetic compass

Answer

One degree for a direct reading magnetic compass, and eleven degrees for a slaved compass

Question 2

Compass swings should be carried out:

Accepted Answer

Only on the compass swinging base or site

Answer

On the apron

Answer

At the holding point

Answer

On the active runway

Question 3

Aircraft magnetism caused by vertical soft iron:

Accepted Answer

Varies with magnetic latitude but not with heading

Answer

Varies with magnetic heading but not with magnetic latitude

Answer

Is not affected by magnetic latitude or heading

Answer

Varies as the cosine of the compass heading

Question 4

Aircraft magnetism caused by hard iron:

Accepted Answer

Is not usually influenced by the Earth's magnetic field

Answer

Varies directly with magnetic latitude

Answer

Varies indirectly with magnetic latitude

Answer

Is maximum on east and west

Question 5

The aim of a compass swing is: 1 to find deviation on the cardinal headings and to calculate coefficients A, B and C; 2 to eliminate or reduce the coefficients found; 3 to record any residual deviation and to prepare a compass correction card.

Accepted Answer

Statements 1, 2 and 3 are all correct

Answer

Only statement 1 is correct

Answer

Statements 1 and 3 are correct

Answer

None of the above statements are correct

Aircraft Magnetism: DGCA Air Navigation questions

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