What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot observed engine surging shortly after takeoff which continued during initial climbout. Subsequently the engine stopped completely. Pilot then prepared amphibious aircraft for water landing and landed without accident or injury. Shortly after the emergency landing a certificated mechanic tried to restart the engine while it was on the water but could not get the engine to restart. Further inspection of the engine revealed that the number one cylinder had a catastrophic failure. Engine oil analysis shows significant metal particulate in the oil system.
As the FAA filed it
PILOT OBSERVED ENGINE SURGING SHORTLY AFTER TAKEOFF WHICH CONTINUED DURING INITIAL CLIMBOUT. SUBSEQUENTLY THE ENGINE STOPPED COMPLETELY. PILOT THEN PREPARED AMPHIBIOUS AIRCRAFT FOR WATER LANDING AND LANDED WITHOUT ACCIDENT OR INJURY. SHORTLY AFTER THE EMERGENCY LANDING A CERTIFICATED MECHANIC TRIED TO RESTART THE ENGINE WHILE IT WAS ON THE WATER BUT COULD NOT GET THE ENGINE TO RESTART. FURTHER INSPECTION OF THE ENGINE REVEALED THAT THE NUMBER ONE CYLINDER HAD A CATASTROPHIC FAILURE. ENGINE OIL ANALYSIS SHOWS SIGNIFICANT METAL PARTICULATE IN THE OIL SYSTEM.