As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON REF NR 20449 AFT CABIN R2 DOOR SILL GIRT BAR AREA HAS SURFACE CORROSION FR 66 STR 23L -Y1732; REF NR 20449 REPAIRED AFT CABIN R2 DOOR SILL GIRT BAR FR 66 STR 23L -Y1732 IAW SRM 53-41-14-300-001 FIG 001 PRINCIPLE 10.