Ok Airship Data;
Airships, Are like griffins, in the sence that they have NO air to ground capabilities. Airships are also affected by safe zones, So they cannot bomb/fight over cities, however can fly over them and dock at them, Airships, cannot fly over raid bosses, because Raid bosses are instanced, Airships can fly almost anywhere, With the exclusion of the Isle of Escape (they insta-die). Airships take TIME AND MONEY to repair. While you can drop from a airship without harm, remember you are still in a area where creatures may be above your level! Airships for the owner (and guild members if its a guild hall) can be treated like a world portal, Warped to with Teleport crystals, and warped from to world portals, or warped to from world portals.
Airships can fight other airships, but it is very rare, Simply due to the IMMENSE costs on both sides, We're talking Millions of Plat here, These things ARE NOT cheap.
Hope that cleared shit up.