As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - AIR TURNBACK - ON CLIMB OUT AND CRUISE AIRCRAFT HAD LEFT WING DOWN 5 TO 7 DEGREES AND RUDDER TRIM 2.8 DEGREES RT. MOST NOTICABLE AT 250 KTS. AND ABOVE; AT 210 KTS. CONDITION LESS NOTICABLE AND AT 170 KTS. FLAP 2 RUDDER TRIM WAS NORMAL AND AIRCRAFT WAS STRAIGHT AND NORMAL. EXTENSIVE TROUBLE SHOOTING AND RIG CHECKS WERE PERFORMED; THE LEFT BLUE SYSTEM AILERON SERVO CONTROL WAS REPLACED AND A FLIGHT TEST PERFORMED SUCCESSFULLY