Deliveries of light business jets in the first quarter climbed by almost 60 percent to 30 shipments, compared with 19 a year ago, according to data from Utica, N.Y-based business aviation information provider JetNet. The very light jet segment–in which JetNet includes the Citation Mustang and Embraer Phenom 100–didn’t fare as well, with deliveries dropping from 11 VLJs in first-quarter 2011 to eight this year thanks to three fewer Mustang shipments.