News Flash


Posted on: July 19, 2022

Commercial Aviation Coordinating Commission (CACC) - Washington Aviation System Plan (WASP)


In 2019 the legislature created the CACC and tasked it with recommending a single preferred location for a new commercial service airport.  Due to the pandemic the schedule for completion was extended but this delay also allowed WSDOT to begin an update to the WASP in parallel with the CACC process, using a consultant team that acts a technical advisory group to the CACC.  The enabling legislation (SSB 5370)  for the CACC specifically excluded King County as a site for expanding a current aviation site or new aviation site.  However, the WASP update has included a greenfield (new aviation) site titled “King County Southeast”, the location more specifically centered on the Enumclaw plateau immediately east of the Muckleshoot reservation.  Furthermore, the WASP evaluation completed so far has this site ranked highest (least amount of major impediments) among the 10 sites being evaluated and indicates it would serve the most unaccommodated passenger demand.

The latest CACC meeting was Thursday June 23rd in which the greenfield sites were first introduced and the recording can be viewed HERE. The discussion of greenfield sites begins at 30:35, the evaluation at 39:15 and the description of the Enumclaw site at 53:45.  A summary of all evaluated sites is at 1:01:03.  The PowerPoint from this meeting is also attached.

CACC Presentation from 06.23.2022

WSDOT - CACC Phase 1 Recap

The CACC is tasked with providing a recommendation to the Washington State Legislature for a new location for a passenger airport in the Puget Sound region. The CACC was created due to concerns that Seattle-Tacoma International Airport is nearing its capacity.

Upcoming Opportunities to Share Input

The CACC’s next milestone is providing a list of two existing airports or potential sites for further study to the legislature by October 15, 2022. To help inform that list, we are hosting another online open house. It will launch August 15 and stay open through September 9. We will also host two virtual public meetings: one on August 21, and one on August 31. We’ll send out another email when the online open house is available, or you can access it through our website.

To share your thoughts and feedback directly with the Commercial Aviation Coordinating Commission via the online open house CLICK HERE!!!

Phase 2 Technical Work

The CACC’s work is being supported by technical analysis currently being conducted as part of the Washington Aviation System Plan (WASP). You can learn more about the differences and overlap in CACC and WASP work on through this summary on our website.

You can learn more about the Commercial Aviation Coordinating Commission aviation study process and upcoming meetings that are open to the public here

If you have questions, please contact  

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