Ouch! Tire blew out?
There are three ways to repair this one....the "cheap" way, the "decent" way and the "perfect" way.
The cheap way would be to replace the lower section where the docking light is located with sheet stock. Cut to size, rivet back in, replace beltline and live with the crease in the "fender".
The decent way would be to install a replacement panel (again made of sheet) over the existing "fender" panel" from the awning ribline forward to just past the damage and extending under the trim below the window. This would be a "scab" concept if you will.
The perfect way would be to replace the entire "fender" panel with a new one from Airstream. Because it's aluminum, there is no way to remove the crease so the only way to acheive an "as new" replacement would be this approach. Ideally, this kind of work should be peformed by Airstream at the factory or one of the better repair shops. This is also a very expensive panel to purchase.
All three would require trim replacement on the fender and the beltline.
1986 Airstream 345 Classic Motorhome