Night Operations

Question 1

Recent flight experience for night

Answer 1

Within the preceding 90 days you must have made as sole manipulator of the controls at least 3 takeoffs and 3 landings to a full stop in the category and class of aircraft within the period from one hour after sunset to one hour before sunrise.

Question 2

Definition of night

Answer 2

Night means the time between the end of evening civil twilight and the beginning of morning civil twilight.

Question 3

Civil twilight

Answer 3

The time when the sun reaches 6° below the horizon.

Question 4

Below 1,200 ft AGL weather clearance

Answer 4

DAY
•Flight visibility - 1 statute mile
•Clear of clouds

• NIGHT (except within 1/2 mile of runway)
• Flight visibility - 3 statute miles
• Distance from clouds
• 500’ below
• 1000’ above
• 2000’ lateral

Question 5

1,200’ AGL - 9,999’ MSL weather clearance

Answer 5

• DAY
• Flight visibility - 1 statute mile
• Distance from clouds
• 500’ below
• 1000’ above
• 2000’ lateral
• NIGHT
• Flight visibility - 3 statute miles
• Distance from clouds
• 500’ below
• 1000’ above
• 2000’ lateral

Question 6

Cones

Answer 6

Receptors concentrated in focal area
•Detail and color oriented
•Best in light

Question 7

Rods

Answer 7

Receptors along periphery
•Not sensitive to color
•Detects movement and shapes
•Good for low light levels
•Requires chemical called 
visual purple

Question 8

Autokinesis

Answer 8

Stationary light appears to move.

Question 9

Airport lighting: civil, military, heliport, runways, taxiways

Answer 9

• civil - white/green
• military - white/white/green
• lighted heliport - green/yellow/white
• runways – white then amber
• taxiways - blue