As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR CUTOUT LOWER SILL WEB HAS AREAS OF CORROSION. GROUNDED - YES. REMOVED DAMAGE, FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED AND REPLACED AFT CARGO DOOR CUTOUT LOWER SILL WEB IAW B737-900ER SRM 51-40-02-0G-0W:2IN O:.045 R:.035 L:28IN D: .010.