Flight testing for longitudinal stability problems continues this month as columnist Barnaby Wainfan details tests for stick force as related to trim and stick-free stability of an aircraft. The object is to gather data and analyze it to see if the hypotheses about the nature of the problem hold up under scrutiny.
Chuck Berthe flies the turbine-powered Comp Air CA9, an impressive work in progress. With a combination of a massive airframe and a Honeywell turbine, the CA9 is a heavy hauler that will really scoot.