As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CONTINENTAL STEEL CYLINDER CRACKED FROM THE SPARK PLUG BOSS TO THE AREA BEHIND THE FUEL NOZZLE. THE CYLINDER HAD A TOTAL TIME OF ONLY 1,019.0 HRS. THE CYLINDER STILL HELD GOOD COMPRESSION, BUT WITH A SOAP CHECK, THE AIR LEAK WAS EVIDENT. SUBMITTER STATES HAVE BEEN HAVING A SERIOUS PROBLEM WITH CYLINDERS CRACKING IN THIS POSITION. BELIEVE THIS IS A SERIOUS PROBLEM AND SHOULD BE INVESTIGATED FURTHER.