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 HVY CKS FOUND CRACK ON LT IB AFT FLAP FITTING. MX REMOVED AND REPLACED LT IB AFT FLAP FITTING PN 170-39187-001 IAW AMM 57-52-00-000-801-A. FOR DETAILS OF WORK PERFORMED SEE NRC# 4500442-5000-0003. AC WAS RETURNED TO SERVICE.