A line that wanders a little bit, but I thought was a blast to climb. Starting up on one of the boulders, find the thin crack in a shallow dihedral that continues for about 20-25 feet. This section is the crux, but the gear is good (blue to yellow metolius TCUs). When the dihedral ends, pull onto the platform that is up and right on bigger holds. Continue up on a couple more obvious ledges towards the left arete, then up a thin crack, and finally up the last 30 feet on jugs to the top.
A fun line that gets your attention at the start, then offers great holds, good gear, and decent exposure all the way to the top. Descend by downclimbing to Air's anchors and rapping, or walk to the north end of the spire and rap from there.
The south face on the Air Spire, starting about 30 feet up and left of Air. I remember the name Lucy being spray painted on the wall near the start, hence my guess at the name.