Night Operations

Question 1

Definition of Night Flying for logging flight time

Answer 1

Time between the end of evening civil twilight and the beginning of morning civil twilight.

Question 2

Definition of Night Flying for currency

Answer 2

1 hour after sunset to 1 hour before sunrise.

Question 3

How does Night Vision work?

Answer 3

Scotopic Vision: Uses our rods and Rhodopsion

Question 4

What is Rhodopsion?

Answer 4

Protein in our eyes for night vision

Question 5

Night Disorientation and illusions

Answer 5

Reversible Perspective: Plane flying towards you appears to be flying away

Size and Distance: Differences in illumination may cause you to perceive a size/distance difference

Flicker Vertigo: Light flickering at 4-20 cycles can cause vertigo

Empty Field Myopia: With nothing to focus on, the eyes automatically focus on a point just slightly ahead of the airplane (find a light to look at)

Question 6

Night emergency procedures

Answer 6

Use map and all available resources to get a sense of surroundings

Question 7

Required Night Equipment?

Answer 7

FLAPS
Fuses/Circuit Breakers
Landing Lights (for hire)
Anti-C Lights
Position Lights
Source of Power

Question 9

Navigation at Night Time?

Answer 9

Aim for well lit cities/populated areas