What was found
WHILE IN SI CHECK, MAINTENANCE FOUND CORROSION ON I/B SIDE RT UPPER SPAR CHORD BETWEEN WEB AND SPAR CHORD 70.5, BS 870. REPLACED CHORD IAW B727-5710-7020A.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE IN SI CHECK, MAINTENANCE FOUND CORROSION ON I/B SIDE RT UPPER SPAR CHORD BETWEEN WEB AND SPAR CHORD 70.5, BS 870. REPLACED CHORD IAW B727-5710-7020A.