What was found
ENGINE WAS RECEIVED BY EJ1R FOR SUDDEN STOPPAGE INSPECTION RESULTING FROM PRECAUTIONARY OFF FIELD LANDING DUE TO BROKEN EXHAUST VALVE ON CYLINDER #5. DURING SUDDEN STOPPAGE TEARDOWN INSPECTION WHILE CLEANING AND VISUALLY INSPECTING CONNECTING RODS, #1 CONNECTING ROD BUSHING WAS NOTED AS VISUALLY UNUSUAL, TECHNICIAN WAS ABLE TO SEE SEAM ON BUSHING. TECHNICIAN PERFORMED SB632B PRESS OUT VERIFICATION PROCEDURE. DURING PERFORMANCE OF THIS PROCEDURE THE #1 CONNECTING ROD BUSHING WAS DISPLACED AT APPROX 1.5- 2 TURNS, BUSHING SHOULD NOT BE DISPLACED WITH MAXIMUM OF SIX TURNS APPLIED. LOGBOOK SUPPLIED WITH ENGINE STATES SB630A HAD BEEN SATISFACTORILY PERFORMED AT 141 ENGINE HOURS ON AUG. 18, 2017 WITH NO DEFECTS NOTED. SUSPECT CONNECTING ROD WILL BE RETURNED TO LYCOMING OEM FOR INVESTIGATION BY MATERIAL LABORATORY AND LYCOMING PRODUCT SUPPORT HAS BEEN NOTIFIED TO PROVIDE NOTIFICATION TO OEM QUALITY SYSTEM FOR FURTHER INVESTIGATION.