Plain English Meaning
Thinking you're better at something than you actually are. The pilot feels sure they can handle it, but their real skill or knowledge isn't quite there yet.
Full Definition
A learner's belief in their own ability or knowledge that exceeds their actual skill or understanding. In flight training, overconfidence appears when a student or pilot judges themselves more capable, prepared, or safe than the evidence supports, leading them to take on tasks or conditions beyond their real proficiency.
Context Anchor
Seen in flight training, especially when an instructor is judging whether a student is ready for more responsibility or needs closer guidance.
Derivation
From 'over-' (too much, beyond what is appropriate) and 'confidence' (from Latin confidere, 'to trust fully'). The word literally means trusting yourself beyond what is warranted.
Why Pilots Care
Overconfidence is a leading contributor to preventable accidents because it causes pilots to bypass precautions, attempt maneuvers beyond their ability, or into deteriorating conditions.