CTO Fatigue Management & Human Factors 2

Question 1

Which circadian rhythm phase is most dangerous for ATC performance errors?

Accepted Answer

0200–0600 local time

Answer

The 0200–0600 window aligns with the circadian nadir when alertness and cognitive performance are at their lowest.

Question 2

A controller notices a colleague making repetitive, minor readback corrections and appearing glassy-eyed. The BEST immediate action is to:

Accepted Answer

Notify a supervisor and suggest the colleague take a break

Answer

Signs of impaired alertness should be reported to a supervisor so the controller can be relieved before a safety event occurs.

Question 3

Under FAA Order 7110.65, what is the minimum rest period required between ATC shifts?

Accepted Answer

10 hours

Answer

FAA policy requires a minimum of 10 hours off between shifts to allow adequate sleep and recovery.

Question 4

The concept of 'sleep inertia' is most relevant to ATC operations because it:

Accepted Answer

Causes grogginess and impaired judgment immediately after waking

Answer

Sleep inertia is the transient state of reduced alertness and cognitive impairment that occurs right after waking, posing risk if a controller returns to position too quickly.

Question 5

Which scheduling practice best supports alertness for controllers rotating through night shifts?

Accepted Answer

Forward-rotating schedules (day→evening→night)

Answer

Forward rotation aligns with the natural tendency of the circadian clock to delay, making adaptation easier and reducing cumulative fatigue.

(CTO) Air Traffic Control Tower Operator Certification Practice Test

(CTO) Air Traffic Control Tower Operator Certification Practice Test

CTO Fatigue Management & Human Factors 2