Currently, the game have 22 airports in Alaska listed as having 0 meters long runway, which is unnatural.
19 of the airports are seaplane base, and have no land runway, thus probably shouldn’t exists in the game, at least for game worlds in the future.
However there are three exceptions. The three airports actually have solid runway but are recorded as having runway of 0m length, thus should be fixed.
First, Aikachak Airport Akiachak Airport - Wikipedia with runway1006m
Second, Akutan Airport Akutan Airport - Wikipedia with runway 1032m
Third, Diomede Island is a more special case, which is said to feature a seasonal ice runway in the winter with thick sea ice formed in the area, but there are online article Alaska Magazine | Alarm Bells for Little Diomede Island which said climate change have caused this unable to be used in recent years.