As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT HAD A BRIEF HISTORY OF STIFF AILERONS. MAINTENANCE FOUND THE B-SYSTEM AILERON POWER CONTROL UNIT AT FAULT. THE AILERON PCU WAS REMOVED AND REPLACED IAW MM 27-11-71, PAGE 401. AN ADJUSTMENT/TEST WAS PERFORMED ON THE AILERON PCU IAW MM 27-11-71, PAGE 501 AND OPERATION CHECKED NORMAL.