As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK IMMEDIATELY AFTER TAKEOFF, NOTED HEAVY ROLL TO LT, ACCOMPANIED BY CONSIDERABLE RUMBLING. REQUIRED 5 UNITS OF RUDDER TRIM & UNKNOWN AILERON TRIM AT 1/2 YOKE DEFLECTION TO LEVEL WINGS. REMOVED AND REPLACED SPOILER MIXER & NR 3 SPOILER ACTUATOR PER MM.