Plain English Meaning
The early, just-starting part of a spin — after the wing has stalled and the airplane has begun to rotate, but before the spin has settled into a steady pattern.
Full Definition
The phase of a spin that begins when the airplane stalls and starts to rotate, and ends when the spin becomes fully developed. It typically lasts about 4 to 6 seconds, or roughly the first two turns, during which the rotation, pitch attitude, and airspeed have not yet stabilized.
Context Anchor
Seen in spin awareness and spin recovery training, especially when describing the first moments after a stall turns into a spin.
Derivation
From Latin 'incipere', meaning 'to begin'. An incipient spin is literally the 'beginning' spin — it has started but is not yet fully formed.
Why Pilots Care
Recovery from an incipient spin requires less altitude loss and simpler control inputs than recovery from a fully developed spin, making early recognition critical for safety.
Grounding Statement
Picture the nose dropping and one wing falling as the airplane starts to rotate; that first developing rotation is the incipient spin.
Intuition Check
Incipient does not mean harmless or mild. It means beginning: an incipient spin is already a developing spin and needs immediate recovery action.
Example Sentence 1
The instructor demonstrated recovery during the incipient spin, before the airplane had completed even one full turn.
Example Sentence 2
The pilot applied full opposite rudder and forward stick at the first sign of an incipient spin and the airplane returned to normal flight with minimal altitude loss.