Nighttime Operations

When is civil twilight active?

• 30 minutes before sunrise & 30 minutes after sunset

• 1 hour before sunrise & 1 hour after sunset

• 30 minutes before sunset & 30 minutes after sunrise

How many statute miles must an anti-collision light be visible for during nighttime/civil operations?

• 3 Statute Miles

• 2 Statute Miles

• 1 Statute Mile

Which statement correctly describes an anti-collision light?

• A strobing light attached to the sUAS that is visible from 3 statute miles that must be used during nighttime & civil twilight sUAS operations.

• A red and green light set attached to the sUAS to show the direction the sUAS is facing.

• A strobing light attached to the sUAS that is visible from 3 nautical miles that must be used during nighttime & civil twilight sUAS operations.

What types of lights are required for civil twilight and nighttime sUAS operations under Part 107?

• Anti-collision lights only

• Anti-collision lights and head lights

• Anti-collision lights and navigation lights

The only type of vision considered for maintaining Visual Line of Sight (VLOS) with the sUAS at night/civil twilight is:

• Physical vision

• Telemetry data

• Thermal vision

If Visual Line of Sight (VLOS) with the sUAS is lost during night time operations, the remote Pilot in Command (PIC) should:

• Stop the sUAS immediately, check the connection, and investigate the area

• Continue the operation as planned, VLOS is not required

• Stop the sUAS and check the connection, then continue if uninterrupted

Visual Line of Sight (VLOS) may be lost if:

• Both scenarios are correct

• The sUAS is within a cloud/fog or the anti-collision light has failed

• The sUAS is behind an obstacle/terrain

How should the remote Pilot in Command (PIC) act in the event of an anti-collision light failure?

• Retrieve and land the sUAS immediately.

• Continue the operation as planned as long as Visual Line of Sight (VLOS) is maintained.

• Notify Air Traffic Control (ATC) that there is an sUAS operating without an anti-collision light.

Which is an example of self-imposed stress?

• Exhaustion from lack of sleep

• Planning for an operation

• Operating at night, but not disrupting circadian rhythm

What is a common mitigation for nighttime exhaustion & stress?

• Getting adequate sleep

• Drinking large amounts of coffee

• Staying awake through the night