As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AROUND NUTPLATES ON REAR SPAR TO TE BEAM UPPER CHORD AT WS 433 NEAR TE. R & R UPPER CHORD WS 433 REAR SPAR TO TE IAW SRM 51-40-02. SDR INFO, CORRODED L2, PN 113T1510-33, SN NSN, PART NAME CHORD, AILERON SUPP STRINGER & WS LOCATION ON ACFT WS 433. ACFT WAS GNDED.