Bombardier Dash 8-Q402 (N439QX) of Alaska Horizon on the tarmac at Portland International Airport, Portland, Oregon, USA on 11 September 2017.
<a href="//commons.wikimedia.org/wiki/User:Joshbaumgartner" title="User:Joshbaumgartner">Josh Baumgartner</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>