CTO Fatigue Management & Human Factors 3 — Questions and Answers
Question 1: According to Threat and Error Management (TEM) principles, which step should occur FIRST when a controller detects an undesired aircraft state?
- Detect and identify the threat (Correct answer)
- Issue an immediate traffic alert
- Coordinate with adjacent sectors
- Document the event in the ATSAP system
Correct answer: Detect and identify the threat
TEM requires that threats be detected and recognized before any response or coordination action can be appropriately executed.
Question 2: Which type of error is MOST associated with high workload conditions in tower operations?
- Capture errors
- Slips (Correct answer)
- Violations
- Mistakes
Correct answer: Slips
Slips—unintended actions on an otherwise correct plan—spike in frequency during high-workload periods when attention is divided.
Question 3: A strategic nap of 10–20 minutes before a night shift primarily benefits controllers by:
- Reducing sleep inertia effects and boosting alertness during the shift (Correct answer)
- Replacing the need for a full night's sleep
- Resetting the circadian nadir to a later hour
- Eliminating microsleeps for the entire shift
Correct answer: Reducing sleep inertia effects and boosting alertness during the shift
A short prophylactic nap improves alertness and reaction time without producing significant sleep inertia, making it effective before night work.
Question 4: Situation awareness (SA) in ATC is BEST described as:
- Perception, comprehension, and projection of traffic elements over time (Correct answer)
- The ability to multitask without error during peak traffic
- Memorization of all current flight plan data
- Vigilance maintained through continuous strip-marking
Correct answer: Perception, comprehension, and projection of traffic elements over time
Endsley's three-level SA model defines it as perceiving elements, understanding their meaning, and projecting future status.
Question 5: Which factor most significantly degrades a controller's situation awareness during periods of low traffic?
- Complacency and reduced vigilance (Correct answer)
- Excessive workload causing tunnel vision
- Frequent position handoffs
- Overly detailed strip annotations
Correct answer: Complacency and reduced vigilance
Low traffic lulls controllers into complacency, reducing active monitoring and making it easier to miss infrequent but critical events.
Question 6: The FAA's Aviation Safety Action Program (ASAP) for ATC encourages voluntary reporting primarily to:
- Identify systemic safety issues without punitive action against reporters (Correct answer)
- Replace mandatory ATSAP incident forms
- Satisfy ICAO auditing requirements
- Gather data for controller performance evaluations
Correct answer: Identify systemic safety issues without punitive action against reporters
ASAP creates a non-punitive environment that encourages candid reporting, enabling identification and correction of systemic safety hazards.
Question 7: Which environmental condition in a tower cab most directly increases fatigue onset during an overnight shift?
- Warm, dimly lit cab with low ambient noise (Correct answer)
- Bright overhead lighting and cool temperature
- Moderate noise from radio communications
- Frequent position reliefs every 30 minutes
Correct answer: Warm, dimly lit cab with low ambient noise
Warmth and dim lighting trigger the body's sleep-onset mechanisms, accelerating fatigue during low-stimulation overnight periods.
CTO Fatigue Management & Human Factors 3
According to Threat and Error Management (TEM) principles, which step should occur FIRST when a controller detects an undesired aircraft state?