As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HEAVY CHECK FOUND AFT WET AREA GUSSET PLATE FR90 RBL 10 IS CORRODED. MX REMOVED AND REPLACED PN 170-60257-001 AFT WET AREA GUSSET PLATE AT FR90 RBL 10 IAW SRM 53-30-10, SRM 51-40-08. AC REMAINS IN IND FOR COMPLETION.