Approval Status

In approximately January, 2015, permission was recieved to install WTT4 and WTT5 Wake Turbulence Timers in ten Northwest Region Control Towers for one year period for testing and evaluation. The most notable locations are:
  • SEA (Seattle-Tacoma International Airport)
  • BFI (King County International Airport - Boeing Field)
  • PAE (Snohomish Coutny Airport - Paine Field)
In January, 2016, Air Traffic Controllers who had used the timers were surveyed, with a favorable response to the timers. Some charges to the timers operation were made to facilitate work flow.
Authorization is currently being sought to make the test and evaluation installations permanent. 
Approval for nationwide has been submitted. Results are Pending.
For more information about approval status, please contact:
Clark Eastman
NAVAIDS/Communications- Washington
Technical Operations
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