Aircraft Magnetism

Question 1

The 4 factors that will affect the nature of permanent magnetism induced during aircraft construction is?

Answer 1

1. Aircraft magnetic heading during construction
2. Magnetic Latitude or angle of dip at the factory
3. The amount of magnetic material in the aircraft
4. The amount of vibration during construction

Question 2

An aircraft have a blue pole in the nose, horizontal long iron in the longitudinal axis, heading 090 degrees. Deviation will be?

Answer 2

Easterly

Question 3

An aircraft have a blue pole in the nose, horizontal long iron in the longitudinal axis, heading 180 degrees. Deviation will be?

Answer 3

Zero

Question 4

An aircraft have a blue pole in the nose, horizontal long iron in the longitudinal axis, heading 270 degrees. Deviation will be?

Answer 4

Westerly

Question 5

An aircraft have a red pole in the nose, horizontal long iron in the longitudinal axis, heading 090 degrees. Deviation will be?

Answer 5

Westerly

Question 6

An aircraft have a red pole in the nose, horizontal long iron in the longitudinal axis, heading 180 degrees. Deviation will be?

Answer 6

Zero

Question 7

An aircraft have a red pole in the nose, horizontal long iron in the longitudinal axis, heading 270 degrees. Deviation will be?

Answer 7

Easterly

Question 8

An aircraft have a blue pole on the right side, horizontal hard iron in the lateral axis, heading 090 deviation will be?

Answer 8

Zero deviation.

Question 9

An aircraft have a blue pole on the right side, horizontal hard iron in the lateral axis, heading 180 deviation will be?

Answer 9

Maximum westerly

Question 10

An aircraft have a blue pole on the right side, horizontal hard iron in the lateral axis, heading 360 deviation will be?

Answer 10

Maximum easterly

Question 11

If Q = + 5, then deviation on 045 degrees = ?

Answer 11

+ 5 cos(045) = + 3.54

Question 12

If P = + 5, then deviation on 045 degrees = ?

Answer 12

+ 5 sin(045) = + 3.53

Question 13

The magnetic coefficient that is constant throughout all headings is called?

Answer 13

Coefficient A

Question 14

The magnetic coefficient that is affected by aircraft magnetism?

Answer 14

Coefficient B and C

Question 15

Coefficient B = ?

Answer 15

Deviation on east - deviation on west / 2

Question 16

If the coefficient B deviation have been found, does on adjust it magnetically using the micro-adjustor on the compass?

Answer 16

No

Question 17

Coefficient B relates to?

Answer 17

Parameter P

Question 18

Coefficient C relates to?

Answer 18

Parameter C

Question 19

Coefficient C = ?

Answer 19

Deviation north - deviation south / 2

Question 20

Magnetic heading =

089
270

Compass heading =

086
273

Calculate coefficient B

Answer 20

Deviation on east - Deviation on west / 2

+3 -3 / 2 (Make the second deviation value expression same as the first) =

+3 +3 / 2 =

6 /2 =

Coefficient B of +3

Question 21

Magnetic heading =

001
180
Compass heading =

004
175

Calculate coefficient C

Answer 21

Deviation on North - Deviation on South / 2

• 3 +5 / 2 =
• 3 -5 (Make the second deviation value expression same as the first) / 2 =
• 8 /2 =

Coefficient C of - 4

Question 22

When conducting a compass swing, what must be done to the coefficient value before it’s applied to the compass heading?

Answer 22

The coefficient value must be reversed.

Question 23

Magnetism during aircraft construction tend to align?

Answer 23

Itself with the magnetic meridian

Question 24

A positive parameter sign is used to indicate?

Answer 24

When deviation causes the compass needle to move in a clockwise direction, and its north seeking end to dip.

Question 25

An aircraft obtains hard iron magnetism during construction while in an easterly heading, the blue pole will be where?

Answer 25

The blue pole will be on the right wing, facing the magnetic South, and the red pole on the left wing facing magnetic North.

Question 26

Compass deviation is when?

Answer 26

The compass North differs from the Magnetic North