As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO R/H TRANSITION STA 500B TO 500L HAS AREAS OF CORROSION. GROUNDED - YES. REMOVED CORROSION FROM R/H TRANSITION DETERMIND FS 500B TO 500H AND FROM 500J TO 500L TO BE WITHIN ALLOWABLE LIMITS AND APPLIED FINISHES IAW BOEING 737-900 SRM 53-00-53-1A-2 FS 500H TO 500J DETERMINED TO BE OUT OF LIMITS AND REPAIRED IAW BOEING 737-900 SRM 53-00-53-2R-5W= 3" O= .040 R= .035" L= 20" D= .005".