TBM 930 Rudder Trim in Microsoft Flight Simulator (2020) Posted 18 hours ago Just to clear this up, rudder trim is not used to counter 'crosswind'. A TBM like all aircraft is designed to fly at a speed range, usually at cruise power no rudder trim is required. If you depart from that speed range, for example; when climbing or descending or in slow straight and level flight, then you will require a rudder input. Rudder trim then comes into play. It is as simple as that, establishing a crab angle has nothing to do with rudder trim.