As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY CHECK FOUND CORROSION - LH INBD GUSSET CORRODED AS MARKED FR 90 REMOVED CORROSION BY BLENDING ON THE L/H I/B GUSSET AT FRAME 90. BLENDED AREA IS 3.0" X 3.0" X .020". NOMINAL THICKNESS IS .040" THIS IS OUT OF LIMITS. REF SRM 51-75-16. REMOVED LH INBD GUSSET FR 90 REF EMB SRM 51-40-08. REPLACED LH INBD GUSSET FR 90 REF EMB SRM 51-40-08.