As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND SKIN CORROSION JUST BELOW THE WASTE TANK VENT PORT. GROUNDED - YES. REPAIRED FUSELAGE SKIN IAW 737-800 SRM 53-70-01-2R-3 THIS IS A CAT B REPAIR WITH AN INSPECTION INTERVAL OF 5,000 FLT CYCLES AND A THRESHOLD OF 50,000 FLT CYCLES A/C TOTAL FLT CYCLES AT TIME OF REPAIR 19,399.W- 2" O- .125" R -0 L- 1" D- .125".