As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT AILERON HINGE FITTING, MIDDLE HINGES HAVE CORRODED CASTLE NUTS (2) (C-CHECK RO 7/18/2021) ORDERED AND RECIEVED NEW FROM STOCK (2EA) NUTS AND COTTER PINS FOR THE LH AILERON MIDDLE HINGE FITTING. INSTALLATION ACCOMPLISHED ON JOB 2759080 OP 518 MX TRANS #22642852