My Legacy experienced Runaway Pitch Trim on the first flight.  Fortunately Test Pilot Josh Brungardt was at the controls, had previously located the trim circuit breaker, pulled it, cycled the coolie hat, then was ok.  I called RAC about the problem and learned they have a new larger relay to replace the older smaller one.  I ran the pitch servo, wiggled the wires and connectors many times with no faulting.  RAC doubted the relay was the problem but I replaced the pitch and roll relays anyway.  I also installed the Adjustable Trim Speed Control that allowed pitch trim to operate at ½ the normal speed…….much better.

Steve Colwell  Legacy 15SC