*AIM Chapter 8 Medical Facts

Question 1

How far can the eye see (while relaxed) during empty field myopia?

Answer 1

10-30 feet. 8-1-6 c.5

Question 2

How many degrees (approximately at one glance) can the eye observe an arc of the horizon?

Answer 2

200. 8-1-6 c.2

Question 3

What percentage of visible light does the AIM recommend sunglasses absorb?

Answer 3

85 percent (15% transmittance). 8-1-6 b.3

Question 4

A moderate degree of dark adaption may be achieved after how long under dim red lights?

Answer 4

20 minutes. 8-1-6 b.2

Question 5

How long does it take your eyes to completely adapt in total darkness?

Answer 5

30 minutes. 8-1-6 b.2

Question 6

What is “The Leans”?

Answer 6

An abrupt correction to straight and level from an unperceived bank disorients pilot into thinking they are in a bank to the opposite direction. They will return to the original banked condition. 8-1-5 b.2

Question 7

What is Coriolis Illusion?

Answer 7

Abrupt head movements in prolonged constant-rate turns can disorient the pilot. 8-1-5 b.2(a)

Question 8

What is a Graveyard Spin?

Answer 8

Recovery from a spin which creates the illusion of entering an opposite direction spin, the pilot will re-enter the original spin. 8-1-5 b.2(b)

Question 9

What is the Somatogravic Illusion?

Answer 9

Rapid acceleration creates the illusion of a nose high attitude. 8-1-5 b.2(d)

Question 10

What is Autokinesis?

Answer 10

In the dark, a static light appears to move after staring at it for too long. 8-1-5 b.2(h)

Question 11

What is a Graveyard Spiral?

Answer 11

Loss of altitude in an unperceived constant-rate turn may cause the pilot to pull back in an effort to climb which will only tighten turn radius, increasing altitude loss. 8-1-5 b.2(c)

Question 12

What is the Inversion Illusion?

Answer 12

An abrupt level-off from climbing causes illusion of tumbling backward. 8-1-5 b.2(e)

Question 13

What is the Elevator Illusion?

Answer 13

An updraft (vertical acceleration) creates an illusion of climbing. 8-1-5 b.2(f)

Question 14

During a low-altitude 1000’ AGL flight, a passenger tells you about his late night SCUBA diving experience which required a controlled ascent. How long should he have waited before flying?

Answer 14

24 hours. 8-1-2 d.2

Question 15

How long can even 1 bottle of beer be detectable on someone’s breath or blood for?

Answer 15

3 hours. 8-1-1 d.1

Question 16

Will a pilot fly a higher or lower approach due to rain on a wind screen?

Answer 16

A lower approach. 8-1-5 3.e

Refraction makes the horizon appear lower than it actually is leading the pilot to fly a lower approach

Question 17

You just finished SCUBA diving in the Caribbean and plan on flying a cross country later in the day at 9,500’. What is the recommended time you should wait before flying?

Answer 17

At least 24 hours. 8-1-2 d.2

Question 18

Will a pilot fly a higher or lower approach when flying to a narrow runway?

Answer 18

They will fly a lower approach

Question 19

Will a pilot fly a lower or higher approach to a runway with downsloping terrain leading up to it?

Answer 19

The pilot will fly a higher approach

Question 20

Will a pilot fly a higher or lower approach when flying to an upsloping runway?

Answer 20

The pilot will fly a lower approach

Question 21

How long is needed for complete dark adaptation for vision?

Answer 21

30 min