Business aircraft flight activity returned to positive territory last month from a year ago, but just barely at 0.6 percent, according to TraqPak data released yesterday by aviation services company Argus. Fractional flying led with a 1.8-percent increase year-over-year, while Part 91 corporate and Part 135 charter activity rose just 0.5 percent and 0.1 percent, respectively. Midsize jet activity climbed 5.6 percent last month versus last October, and light jets coaxed out a gain of 1.2 percent. Large-cabin jet flying was down 4.1 percent year-over-year. A 2.8-percent rise in fractional turboprop activity wasn’t enough to offset decreases at Part 91 and 135 operators, resulting in 2.6 percent fewer turboprop hours last month. Among individual market segments, midsize jet charter saw the largest increase, climbing 13.1 percent from the same period last year, while fractional large jet flying fell the most (-8.3 percent). Argus’s TraqPak data “is serial-number-specific aircraft arrival and departure information on all IFR flights in the U.S.”