Definition
An ICAO and FAA system that revises the older weight-based wake turbulence separation categories (Heavy, Large, Small, etc.) into a more refined set of categories based on a combination of aircraft maximum takeoff weight, wingspan, and approach speed. The revised categories are used by air traffic control to apply more accurate minimum separation distances or time intervals between a leading aircraft generating wake turbulence and a following aircraft.
Plain English
A newer way of grouping aircraft for wake turbulence spacing. Instead of sorting planes only by weight, controllers now sort them using weight, wingspan, and approach speed together. This gives more accurate spacing between aircraft on approach and departure.
Context Anchor
You may see this term in ATC procedures, airport operations, and discussions of arrival or departure spacing at busy airports.
Derivation
Re-categorization simply means "sorting into categories again." The term reflects that the original wake turbulence categories were redrawn using better data than weight alone.
Why Pilots Care
It reduces unnecessary spacing behind many aircraft types, improving airport throughput and schedule reliability while preserving safe wake turbulence margins.
Grounding Statement
A large aircraft can leave rolling, disturbed air behind it, and Wake Re-Categorization helps ATC decide how much room the next aircraft needs to stay safely away from that air.
Intuition Check
Wake Re-Categorization does not mean the wake itself is changed after the aircraft flies. It means aircraft are sorted into updated groups so spacing can better match the wake risk.
Example Sentence 1
Under wake re-categorization, the controller applied a shorter separation interval between the two aircraft on final approach than the old weight-based rules would have required.
Example Sentence 2
Under the new Wake Re-Categorization standards, the heavy jet no longer required the full three-minute wake separation behind the preceding super.