As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH OMEGA BEAM UPPER SURFACE HAS CORROSION BETWEEN FR 40 & 41- REMOVED FASTENERS & BLENDED AREA OF CORROSION. ORIGINAL THICKNESS=.040 BEFORE BLEND. THICKNESS AFTER BLEND = .010. .030 MATERIAL LOSS= OUT OF LIMITS. REMOVED LH OMEGA BEAM UPPER GUSSET BETWEEN FR 37-FR 45. STARTED INSTALLING NEW UPPER GUSSET ON LH OMEGA BEAM FR 37- FR 45. COMPLETED INSTALL OF NEW GUSSET ON LH OMEGA BEAM FR 37-45.