As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION FINDS SEVERAL INTERCOSTALS CRACKED EACH YEAR. THE WORKING OF AND STRESS THAT RESULTS FOR USING THE CABIN AIRSTAIR DOOR IS THE CAUSE OF THE INTERCOSTAL CRACKING. SUBMITTER RECOMMENDATION IS FOR A FORWARD CABIN AIRSTAIR DOOR SUPPORT CABLE.