As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: REAR BARREL FLOOR STRUCTURE CORROSION FOUND ON FLOR SILL AT FR 76 STRG 22R; REMOVED CORROSION ON FLOOR SILL (PN# C01342901-113) AR FR76 STRG 22R AS PER REQ 500-53-61-1690 AND JETBLUE EC# A25-113-01 REF AVIANOR WO# JB-3112-C01 NR# 3239 FOR WORK ACCOMPLISHED.