As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C4 CHECK - LAV VENT AFT OF FR 19.400 BY STR 33 INTERNAL SKIN DOUBLER IS CORRODED. REMOVED CORROSION IAW SRM 51-21-00. MIN THICKNESS REMAINING .024" REF NTM 51-00-02-250-801 FOUND OUT OF LIMITS. FABRICATED AND MATCH DRILLED NEW DOUBLER IAW SRM 51-40-07. ALODINE AND PAINTED PARTS IAW RM 51-21-10, 51-25-10 AND 51-25-25. INSTALLED REPAIR IAW SRM 51-42-05.