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FAASTeam Notice
Type: Selected ATC Notices
Notice Date: Thursday, January 14, 2021
Notice Number: NOTC1648
FAA Consolidated Wake Turbulence (CWT) Radar Separation Standards Implementation within Louisville TRACON Airspace
This notice expired on
Sunday, February 14, 2021

Cancellation: 2/2/2022

Background: Aircraft wake recategorization (RECAT) is the safe decrease in separation standards between some aircraft types. Worldwide collaborative research by experts in wake turbulence, extensive safety and risk analysis, and over eight years of RECAT operational experience at major U.S. airports has shown the required separation criteria between certain aircraft could be safely decreased.  Consolidated Wake Turbulence (CWT) will take advantage of the continuing evolution of wake mitigation strategies to consolidate the benefits of previous RECAT efforts along with the standards of FAA Order JO 7110.65.

Implementation: Effective 0700 Eastern Standard Time / 1200 Coordinated Universal Time (UTC), Tuesday, February 2nd, 2021,  Louisville Tower/TRACON (SDF) will be designated a RECAT CWT facility and will separate arrivals and departures using RECAT CWT aircraft separation standards.  The following Air Traffic Control Towers (ATCTs) within the Louisville Approach Control areas will also be designated as RECAT CWT facilities and will separate arrivals and departures using RECAT CWT aircraft separation standards.

  • Bowman Field Airport, Louisville, KY (KLOU)
  • Godman Army Airfield, Fort Knox, KY (KFTK)
  • Louisville Muhammad Ali International Airport, Louisville, KY (KSDF)

Discussion: For Louisville Tower/TRACON (SDF), aircraft are grouped into nine Wake Categories based on the following definitions:

Category A – A388

Category B – Upper Heavy aircraft.

Category C – Lower Heavy aircraft.

Category D – Heavy aircraft not included in Category B or C.

Category E – B757 aircraft.

Category F – Upper Large aircraft excluding B757 aircraft.

Category G – Lower Large aircraft.

Category H – Small aircraft with a maximum takeoff weight of more than 15,400 pounds up to 41,000 pounds.*

Category I – Small aircraft with a maximum takeoff weight of 15,400 pounds or less.*


*This order changes the lower boundary of Upper Small aircraft from 12,500 pounds to 15,400 pounds, however, be aware, some Small Plus aircraft are categorized as Lower Small (Category I).


Refer to FAA Order JO 7110.126, Consolidated Wake Turbulence Radar Separation Standards (CWT), for information on aircraft designator types and wake turbulence separation tables.  There are no changes to existing radiotelephony usage, “HEAVY” and “SUPER” are used when applicable.  RECAT information can also be found in Safety Alert For Operators (SAFO) #12007, #14007, and Information For Operators (InFO) #16016.  Additional wake turbulence information can be found in Advisory Circular (AC) 90-23G, “Aircraft Wake Turbulence,” and the FAA “Aeronautical Information Manual (AIM).


These documents are available online at:


Please direct questions concerning Consolidated Wake Turbulence (CWT) to:
Louisville Tower/TRACON (SDF), (502) 375-7416, or


Blake Hobden
Air Traffic Manager, Louisville Tower/TRACON


Click the link below to download a copy of this notice: