That's bad news, my two RVs are disavowed by the manufacturer, my 2005 Leisure Travel Vans Freedom II Serenity (long name) was made by LTV but when Triple-E purchased them they seem to have just not bothered to keep any records, although they can tell you about old Triple-E RVs. I can't even get body panels to repair it. So odd as many of the workers are the same from the LTV days.
Now hearing Airstream, a company around since the 40's is claiming to not have info due to a fire, very disconcerting. The people there did send me a list (posted here somewhere) showing the 27 units of SkyDeck they ever built, seems they never did the same color twice in a year, so if I have the red 2005, your red must be 2003 or 4.
Here are all the SkyDecks I could find back in the day:
https://www.pinterest.com/israndy/airstream-sky-decks/
Includes that SkyDeck consumed by fire, just like Airstream's records. So know that when you are climbing a tall hill with a full load you need to stop and let the engine rest or the fiberglass may catch fire.