Definition
In aviation human factors and accident analysis, an unsafe act is an error or violation committed by a pilot or other operator that directly contributes to, or has the potential to cause, an incident or accident. Errors are unintentional deviations from correct procedure, while violations are deliberate departures from established rules or procedures.
Plain English
Something a pilot does — by mistake or on purpose — that breaks safe operating practice and could lead to an accident.
Context Anchor
Used in aviation safety and decision-making discussions when looking at how human choices contribute to accidents or close calls.
Why Pilots Care
Recognizing unsafe acts helps pilots prevent errors and violations that cause most accidents.
Grounding Statement
An unsafe act is the moment a person’s choice or action moves the situation away from safety.
Intuition Check
Unsafe act does not mean only a reckless or intentionally dangerous action. It can also be a simple mistake, missed step, or poor decision that increases risk.
Example Sentence 1
The instructor explained that descending below minimums on an instrument approach is an unsafe act, whether the pilot did it deliberately or simply lost track of altitude.
Example Sentence 2
Instructors teach students to identify an unsafe act during flight so they can correct it immediately.