with 8,306 hours on an airframe, what is the life limit to a) stop flying aerobatics, and b) stop flying normal category? I would assume that the flight hours are not clearly documented to distinguish normal, utility, and aerobatic hours. Even if this available, how can the lifelimit of the airframe be determined?
I don't know about aerobatic planes, but it's not unusual for a 152 to have more than 10,000 hrs on the airframe. As long as the annual inspection doesn't turn up problems in the airframe, it's good to fly. A 150 typically has fewer hours than a 152, because back when Cessna was still making 150-152, the flight schools replaced their planes every 4-5 years; once those planes got sold to private owners, they don't get flown as much. When Cessna stopped making the 152s, the flight schools didn't have any good 2-seat trainers to replace them with, so they hang on to them and racked up the hours.
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