Fatigue-related errors include which set of items in flight operations?

• A. Procedural errors, unstable approaches, wrong runway, poor decision-making
• B. Mischarges of equipment
• C. Incorrect radio frequencies
• D. Cleaning duties

Answer: (A)

Fatigue affects thinking, vigilance, and the discipline of following standard procedures. When tired, pilots are more likely to drift from established processes, lose situational awareness, and make poorer judgments under pressure. That combination shows up in errors like not following procedures, approaching in an unstable manner, misperceiving or misinterpreting cues that can lead to selecting the wrong runway, and making suboptimal decisions. These reflect a common pattern of degraded monitoring, slower reaction times, and compromised decision quality that fatigue tends to produce in flight operations. By contrast, mischarges of equipment, incorrect radio frequencies, or cleaning duties are not typical fatigue-driven error clusters; they’re more related to equipment handling mistakes, communication setup issues, or non-flight tasks, respectively, and don’t illustrate the same fatigue‑related performance risks.