As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT L/H TRANSITION PANEL AT STA 727+15 TO 747+10 HAS CORROSION GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMITS, REPPAIRED TRANSITION PANEL FROM STA 727F+13 TO 747+13 IAW B737-900 SRM 53-00-53-2R-5 W= 2.25" O= 0.040 R= 0.058" L= 56" D= 0.002"