Pat Longs Hatz Classic Experimental Aircraft - From Fabric to Flight! Keep on Building! - VansAircraftBuilders.com Inspiration! See Pats beautiful Hatz Classic Experimental Aircraft, built right in his garage. From Fabric to Flight! See the Original Video in High Definition. See the full line of RV Aircraft! Be sure and tell them that VansAircraftBuilders.com sent you when you order your RV Kit!