What was found
(CAN) FACTORY NEW CYLINDER INSTALLED ON ANNUAL INSPECTION. AIRCRAFT TEST FLOWN AND PARKED. NEXT MORNING ON START UP THE ENGINE RAN ROUGH. INVESTIGATION FOUND NR4 CYLINDER INTAKE VALVE SEAT DISLODGED. NR4 CYLINDER REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) FACTORY NEW CYLINDER INSTALLED ON ANNUAL INSPECTION. AIRCRAFT TEST FLOWN AND PARKED. NEXT MORNING ON START UP THE ENGINE RAN ROUGH. INVESTIGATION FOUND NR4 CYLINDER INTAKE VALVE SEAT DISLODGED. NR4 CYLINDER REPLACED.