AC Duct dripping noise

Thanks for the replys I went up no issues draining to the back of the rig. I think it's expansion or something. It is coming from the vent in te master bedroom up top. I took pictures with cell phone inside the duct work I see no evidence of condensation or water. I will try to retake the area to see if that helps. I do not hear it around any other ven.

Can you see the a\c condensate running off the roof? If not, if you feel comfortable, climb up on the roof and remove the a/c cover. Two screws in the rear and two up front. See if the condensation pan is draining water away as it should. The drain holes may be clogged with leaves\debris the pan is full and what your hearing are the droplets splash.
Mike

Expansion/contraction of something.

loose piece of plastic or tape rattling as the fan blows it