A/C maintenance

The Captain is working late today and we are having some issues with the aft a/c.  I am the daughter of an HVAC professional, so the girl and I decided we would blow out the lines and see if we could improve things a bit.  K learned a bit about the various valves and was a big help watching for discharge.  It's a little better, but the aft a/c discharge line may need to be replaced.