As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU COMPARTMENT DOOR STRUCTURE R/H ANGLE HAS CORROSION. GROUNDED - YES. REMOVED CORROSION ON AFT COMPARMENT DOOR STRUCTURE R/H ANGLE, FOUND TO BE OUT OF LIMITS, REMOVED AND REPLACED R/H ANGLE IAW B737-800 SRM 51-40-02-0G-0 W= 1" O= .050 R= .000 L= 1" D= .050.