Black Tank Flush?

[frjeff]

Does my "new to me" 89 Excella 29 have this feature? If so, where do I find the connection?

[OTRA15]

Look in your owner's manual. If there is none, check the Airstream site, by clicking on the Service tab at the top right, and choosing Manuals in the drop-down menu. For '89 you might have to look under the Document Archive option.

https://www.airstream.com/

Good luck!

Peter

PS -- I would guess that your older AS does not have such a system. The hose connection is usually right near the city water connection, so start by looking for an extra female hose connection.