As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FRAME 22 FOUND CORROSION APPROXIMATELY 4 INCHES ABOVE THE DOOR CENTER SILL. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED FRAME 22 AFT LOWER THRESHOLD NUT PLATE HOLE YAW EON EM-53MR-1677. THE AIRCRAFT WAS RETURNED TO SERVICE.