How to repair ac drain water leak

There is a catch pan under the evaporator in up under the dash, that collects the moisture and a drain hose leads to outside of car. Most likely that hose has been disconnected. A 2009 is not old enough for the pan to have rusted away, not even close. You simply re-attach it, but you have to be just a little bit of a contortionist to lay on your back and twist around to see it. Once you get in position, it's visible, a black hose about ½ diameter