IFR Navaids - Remote Indicating Compasses

A/C magnetic heading is 097°, variation is 25°E and deviation is 5°E The true and compass headings are:

• 072°T, 102°C

• 122°T, 092°C

• 072°T, 092°C

• 122°T, 102°C

The detector unit of the remote indicating compass is:

• Fixed in the vertical plane and free in azimuth.

• Free when the DG is selected.

• Free in both the vertical plane and in azimuth +/- 25°

• Fixed in azimuth

Remote indicating compasses suffer from:

• Turn and acceleration errors.

• Turn errors only.

• Acceleration errors only.

• Neither turn nor acceleration errors.

A/C heading 310˚M. ATC instruct you to turn right onto heading 165˚. Using a direct reading magnetic compass, what heading do you need to roll out on?

• 140˚

• 190˚

• 165˚

• 175˚

The detector unit of a remote indicating compass is installed in the wing tip so that:

• It will not be de-calibrated during routine servicing.

• During compass swings it is easily accessible.

• It is as far removed as possible from the extraneous magnetic fields of the aircraft.

• It is kept as remote as possible from the stand by direct reading compass.

The precession rate of the gyro in a remote indicating compass is:

• 5°/min

• 2°/min

• 4°/min

• 8°/min

If the flux valve input to the DGU fails, what effect will this have on the RMI indication?

• The compass card will show 000

• The RMI will show a heading 90 degrees off the correct heading

• The RMI will spin continuously at the gyro will topple

• A slaving error flag may appear on the RMI but it will continue to function as a normal DI

Deviation is:

• The angle between true north and magnetic north.

• The angle between compass north and true north.

• The angle between compass north and magnetic north.

• Caused by variations in the Earth’s magnetic field.

The H and Z components of the Earth’s magnetic field:

• Are directly proportional.

• Increase with latitude.

• Are inversely proportional.

• Do not change with latitude.

On the earth’s surface, points of zero dip are known as:

• Isogonals

• Agonic

• Isoclinals

• Aclinic