As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND CORROSION ON LOWER INNER SURFACE OF MAIN CABIN DOOR, AROUND FOUR NUT PLATE HOLES. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED CORROSION ON LOWER INNER SURFACE OF MAIN DOOR AROUND FOUR NUT PLATE HOLES IAW EO EM-52MR-275. THE AIRCRAFT WAS RETURNED TO SERVICE.