As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RT ENGINE CRANKCASE CRACKED IN THE AREA OF NR 1 CYLINDER UPPER FORWARD STUD. NR 1 CYLINDER FORWARD LOWER BASE STUD PN 646140-1 SHEARED. THE CRACK WAS FOUND APPROXIMATELY 60 HOURS PREVIOUSLY DURING ROUTINE MAINTENANCE, BUT WAS WITHIN LIMITS (LESS THAN 50.8 MM OR 2 INCHES). THE CRACK HAS NOW GROWN BY APPROXIMATELY 12.7 MM (0.5 INCH) WITH ADDITIONAL CRACKS APPROXIMATELY 6.35 MM (0.25 INCH)CROSSING THE END OF THE MAIN CRACK. (X)