What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Investigated an engine failure of privacy data omitted on April 15, 2026 while returning from a flight training lesson to the local practice area. Upon returning to Beaver County Airport (bvi) the aircraft completed a full stop landing, then departed for an additional takeoff and landing. After reducing power in the downwind leg the engine had a significant RPM reduction (500RPM redcution) and the pilot declared an emergency. Approximately 30 seconds following the RPM reduction, the engine failed. The aircraft successfully landed on runway 28 and came to a stop off the active runway and on an adjacent taxiway. During the investigation, it was found that an exhaust gas valve in cylinder #4 was found to be separated between the valve stem and the valve head. The damaged valve head was subsequently fragmented within the cylinder and became wedged within #4 cylinder causing the engine failure and the propeller to stop and not windmill during the engine failure event. The engine was approximately 500 hours over the recommended overhaul time.
As the FAA filed it
INVESTIGATED AN ENGINE FAILURE OF ^PRIVACY DATA OMITTED^ ON APRIL 15, 2026 WHILE RETURNING FROM A FLIGHT TRAINING LESSON TO THE LOCAL PRACTICE AREA. UPON RETURNING TO BEAVER COUNTY AIRPORT (BVI) THE AIRCRAFT COMPLETED A FULL STOP LANDING, THEN DEPARTED FOR AN ADDITIONAL TAKEOFF AND LANDING. AFTER REDUCING POWER IN THE DOWNWIND LEG THE ENGINE HAD A SIGNIFICANT RPM REDUCTION (500RPM REDCUTION) AND THE PILOT DECLARED AN EMERGENCY. APPROXIMATELY 30 SECONDS FOLLOWING THE RPM REDUCTION, THE ENGINE FAILED. THE AIRCRAFT SUCCESSFULLY LANDED ON RUNWAY 28 AND CAME TO A STOP OFF THE ACTIVE RUNWAY AND ON AN ADJACENT TAXIWAY. DURING THE INVESTIGATION, IT WAS FOUND THAT AN EXHAUST GAS VALVE IN CYLINDER #4 WAS FOUND TO BE SEPARATED BETWEEN THE VALVE STEM AND THE VALVE HEAD. THE DAMAGED VALVE HEAD WAS SUBSEQUENTLY FRAGMENTED WITHIN THE CYLINDER AND BECAME WEDGED WITHIN #4 CYLINDER CAUSING THE ENGINE FAILURE AND THE PROPELLER TO STOP AND NOT WINDMILL DURING THE ENGINE FAILURE EVENT. THE ENGINE WAS APPROXIMATELY 500 HOURS OVER THE RECOMMENDED OVERHAUL TIME.