As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK, LT WING FLAP TORQUE TUBE F5 HAS PITTING ON SPLINES AT MALE END. MX R & R LT WING F5 TORQUE TUBE MALE SPLINE END IAW SRM 51-40-02. RE-INSTALLED LT WING F5 TORQUE TUBE IAW AMM 27-51-03 SEE CONTINUATION CARD FOR WORK ACCOMPLISHED. PN 5913246 UNIVERSAL JOINT. AIRCRAFT REMAINS UNTIL HEAVY CHECK COMPLETION.