huh?
I'm not sure what you're talking about...
If you mean you want your airship to have an "interior", then you can do this with events if you make a dummy event to represent your airship (using the airship graphic) on your map. Then, when you hit the action button, it would go into the airship and saved the location (x and y) of your char on the map. Then, when you talk to the pilot, it would transfer you back to the map you were on, at the location stored, and move the airship onto that location, while changing the graphic from the first event to nothing (so that it will not show up anymore)
Although, that is severely complicated and I am not 100% sure I thought it through right...
As far a making an airship, it is a standard function, and you can set your airship start location with your event editor in the same area as character start location.