- Fix: Clear airport persistent storage on construction/removal of airports (r22552)
- Fix: Possible crash when opening the airport build window for the first time [FS#4619] (r22538)
- Fix: Replace the half small airport structure on the intercontinental airport with some grass [FS#3494] (r22537)
- Fix: Documentation omission regarding admin protocol [FS#4632] (r22536)