What was found
NR 0571 004, CORROSION (C53-100-01,1) ON UPPER CHORD OF FRAME AT BS 220, RBL 21, WL 148. *S/D* REMOVED DAMAGED UPPER CHORD. FABRICATED AND INSTALLED NEW UPPER CHORD BS 220, RBL 28 TO LBL 28, WL 148 PER BOEING DRAWING 65-16305.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 0571 004, CORROSION (C53-100-01,1) ON UPPER CHORD OF FRAME AT BS 220, RBL 21, WL 148. *S/D* REMOVED DAMAGED UPPER CHORD. FABRICATED AND INSTALLED NEW UPPER CHORD BS 220, RBL 28 TO LBL 28, WL 148 PER BOEING DRAWING 65-16305.