PALMDALE - Many students spend spring break partying at the beach or on the slopes. However, a handful of Antelope Valley College airframe and powerplant students spent two days of their spring break restoring airplanes for display at Palmdale Plant 42 Heritage Airpark on Avenue P between 20th and 25th streets west. Jerry Shatzer, 46, and Betsy Luahiwa, 45, kept busy manufacturing a panel to cover an access panel near the tail end of a 1960s-era Navy A-4 Skyhawk, while Stephen Lopez, 39, Tim Gaines and James Dillard, 21, worked on the top of plane. "We're covering access panels no...