As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXFOLIATION CORROSION AND CRACK ON NR 10 VENTRAL STAIRWAY RISER LWR RIB CRACKED. LOWER RIB WEB REMOVED IAW SRM 51-30-2. CORROSION FOUND TO BE OUTSIDE LIMITS IAW SRM 52-00-02. RIB WEB FABRICATED AS PER DRG NR 65-19809. RIB WEB INSTALLED IAW SRM 51-30-02.