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Washington Aviation System Plan (WASP)

Completed in July 2017, the Washington State Aviation System Plan Report is available below.

Due to file size, the report is posted by chapter and appendix. To request a copy of the full report (not broken down by chapter), please contact WSDOT Aviation Senior Planner Rob Hodgman

WASP Executive Summary (July 2017)

WASP Executive Summary  (pdf 1805 kb)

Letter from WSDOT Secretary Roger Millar

WASP Final Report (July 2017)

Cover (pdf 1397 kb)
Table of Contents (pdf 57 kb)
Chapter 1 - Overview (pdf 100 kb)
Chapter 2 - Goals and Objectives (pdf 95 kb) 
Chapter 3 - Inventory (pdf 644 kb)
Chapter 4 - Forecast (pdf 695 kb) 
Chapter 5 - Capacity (pdf 503 kb) 
Chapter 6 - Classifications and Metrics (pdf 324 kb)
Chapter 7 - Alternative Strategies (pdf 3,572 kb) 
Chapter 8 - Multimodal   (pdf 75 kb)
Chapter 9 - Policy Recommendations (pdf 154 kb) 

Appendix A - Glossary of Terms (pdf 100 kb)
Appendix B - Emerging Issues - Aerospace Manufacturing (pdf 1,137 kb)
Appendix B - Emerging Issues - Aircraft Fuels (pdf 330 kb)
Appendix B - Emerging Issues - Aircraft Innovation (pdf 356 kb)
Appendix B - Emerging Issues - ATC Funding Challenges (pdf 492 kb)
Appendix B - Emerging Issues - Decline in GA (pdf 219 kb)
Appendix B - Emerging Issues - Infrastructure Funding Challenges (pdf 282 kb)
Appendix B - Emerging Issues - NextGen Impacts (pdf 257 kb)
Appendix B - Emerging Issues - Unmanned Aircraft Systems (pdf 1,769 kb)
Appendix C - Airport Classifications (pdf 70 kb)
Appendix D - Public Involvement Plan (pdf 239 kb)

WASP Background:

The Washington State Department of Transportation is updating the Washington Aviation System Plan (WASP). The primary purposes of the WASP update are to:

  • Study the performance and interaction of Washington's entire aviation system.
  • Understand the contributions of individual airports to the system as a whole.

The study involves examining aviation user requirements, current airport usage levels and based aircraft and capacity to meet current and future demand.

WASP Priorities:

Build upon previous efforts and recommendations:

  • 2009 Long-Term Air Transportation Study
  • 2012 Aviation Economic Impact Study
  • 2014 Airport Investment Study
  • 2015 Airport Investment Solutions Study

Identity issues and evaluate impacts to determine needed airport and system improvements. Engage with the community and seek input. Prioritize development and make recommendations.

Community Engagement:
WASP Community Engagement Plan (pdf 727 kb)

Stakeholder Groups:

  • Advisory Committee
  • Interested Parties
  • Multimodal Working Group
  • Emerging Issues Working Groups

To sign up as an "Interested Party" contact Christina Crea at

Contact Information:

Robert Hodgman
WASP Project Manager/Senior Aviation Planner

Christina Crea
WSDOT Aviation Communications/Public Information Officer

Useful Links:

WASP Folio