Talk:Summer 2015 Event/@comment-26402554-20150811042258/@comment-5380363-20150811042630

Aicraftt EXP - the more bars on it, the more effective your aircrafts become. You lose all the bars if all the aircraft in your plan slots hit 0 and their stats return to their baseline stats.

Don't worry, this is a new aircraft mechanic that's only been introduced, so I guess no one's got the stat gains for it yet.