Chapter 8.4 - Sensory Illusions

Question 1

Define Disorientation?

Answer 1

When a person is unable to sense Attitude correctly with the natural horizon.

Question 2

Name three factors on how we sense Attitude on the ground?

Answer 2

• Seeing fixed objects.
• Feeling Weight.
• Vestibular Apparatus (the inner ear).

Question 3

True or False. Without visual clues, it is possible for a Pilot to enter a manoeuvre without being aware of it?

Answer 3

True.

Question 4

What is Coriolis illusion?

Answer 4

Where a Pilot incorrectly perceives changes in pitch, roll and yaw.

Question 5

Somatogravic is an illusion during which flight manoeuvre?

Answer 5

Climbing.

Question 6

Which flight instrument assists a Pilot in finding the Horizon is visual/surface references are blocked?

Answer 6

Attitude Indicator.

Question 7

Name three height illusions which may cause a Pilot to unnecessarily increase or decrease the angle of approach?

Answer 7

• Runways with different widths.
• Upsloping/Downsloping Runways.
• Upsloping/Downsloping Final Approach Terrain.

Question 8

How many degrees is the standard glide path on approach?

Answer 8

3.

Question 9

On an upslope Runway, a Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 9

• Too High.

- Shallower than Normal.

Question 10

On an upslope terrain, a Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 10

• Too High.

- Shallower than Normal.

Question 11

If the Runway is narrower or longer than what a Pilot is use to, the Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 11

• Too High.

- Shallower than Normal.

Question 12

An approach at night with no visual cues or lights, the Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 12

• Too High.

- Shallower than Normal.

Question 13

An approach over featureless terrain (snow or desert), the Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 13

• Too High.

- Shallower than Normal.

Question 14

Rain sufficiently heavy enough to cause a layer of water on the windscreen, can cause the illusion of being what?

Answer 14

Too High.

Question 15

An approach in darkness or reduced visibility can cause the illusion of being what?

Answer 15

Too High.

Question 16

On a downslope Runway, a Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 16

• Too Low.

- Steeper than Normal.

Question 17

On a downslope terrain, a Pilot may have the illusion of being what? When corrected this can lead to the approach path being what (2)?

Answer 17

• Too Low.

- Steeper than Normal.