Definition
A degraded ability to evaluate information, weigh options, and make sound decisions, typically caused by physiological factors such as hypoxia, fatigue, dehydration, alcohol, medication, or stress. In aviation, it refers specifically to a pilot's reduced capacity to recognize problems, assess risk accurately, and choose appropriate actions while operating an aircraft.
Plain English
Your thinking and decision-making are not working properly. You may not realize it, but you are making worse choices than you normally would.
Context Anchor
Seen in discussions of hypoxia symptoms, especially during flight at higher altitudes or any situation where the pilot may not be getting enough oxygen.
Derivation
Impaired comes from the Latin 'pejorare,' meaning to make worse. Judgment comes from the Latin 'judicare,' to judge or decide. Together: a worsened ability to decide.
Why Pilots Care
Impaired judgment is a leading contributor to hypoxia-related incidents because it causes pilots to ignore warning signs or make unsafe choices before they feel physically unwell.
Grounding Statement
A pilot with impaired judgment may feel confident at the exact moment their decisions are becoming less safe.
Intuition Check
Impaired judgment does not just mean making one bad choice. It means the ability to judge what is safe has been weakened, and the pilot may not notice it.
Example Sentence 1
One of the first symptoms of hypoxia is impaired judgment, which is why pilots may continue climbing without recognizing they are in trouble.
Example Sentence 2
Recognizing impaired judgment as an early hypoxia symptom, she immediately donned the oxygen mask and began a descent.