Definition
A spin in which the aircraft continues to autorotate and descend without the pilot being able to stop the rotation or recover the aircraft to normal flight using standard control inputs. The aircraft remains stalled, yawing and rolling around the vertical axis, and does not respond predictably to recovery actions.
Plain English
A spin the pilot cannot stop. The airplane is stalled and rotating downward, and the usual recovery controls aren't bringing it back under control.
Context Anchor
Seen in stall and spin training, emergency procedure discussions, and accident reports involving loss of control.
Derivation
Spin' describes the rotating, descending motion. 'Uncontrolled' means the pilot has lost the ability to direct or stop the motion -- the rotation continues despite control inputs.
Why Pilots Care
An uncontrolled spin is a leading cause of fatal loss-of-control accidents; prompt recognition and correct recovery technique are essential for survival.
Grounding Statement
The key idea is that the airplane is both stalled and rotating; it is not just in a steep turn.
Intuition Check
Uncontrolled does not mean outside air traffic control here. It means the pilot has not yet stopped or managed the aircraft’s stalled rotation.
Example Sentence 1
The flight instructor emphasised that recovery from an uncontrolled spin requires altitude, which is why spin awareness training focuses on prevention rather than recovery.
Example Sentence 2
In the practice area the instructor demonstrated an incipient spin before it became uncontrolled.