What was found
(AUS) DURING FLIGHT, THE ENGINE COMMENCED VERY ROUGH RUNNING. GROUND INVESTIGATION FOUND NR 1 CYLINDER HAD CRACKED THROUGH 360 DEGREES FROM THE ATTACHMENT FLANGE TO THE FIRST FIN. THE CYLINDER REMAINED ATTACHED AS ONE END CRACK WAS APPROXIMATELY 19 MM (0.75 INCH) ABOVE THE OTHER. PART TC: 1,954.