What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: this oil cooler is part of a certified engine installation in a Cessna 172M. During cruise flight, the oil cooler ruptured in the area of the output side of the end tank between the welded seams on the cooler. This caused a rapid loss of engine oil and eventual engine failure. During cruise flight from saginaw, MI to pontiac, MI while passing within 5 miles from Flint, MI airport, the pilot noticed a loss of oil pressure. The engine started knocking and an emergency was declared with the Flint tower. While inbound to Flint on a 2 mile final, the engine quit. A landing was made on the airport without further incident.
As the FAA filed it
NARRATIVE: THIS OIL COOLER IS PART OF A CERTIFIED ENGINE INSTALLATION IN A CESSNA 172M. DURING CRUISE FLIGHT, THE OIL COOLER RUPTURED IN THE AREA OF THE OUTPUT SIDE OF THE END TANK BETWEEN THE WELDED SEAMS ON THE COOLER. THIS CAUSED A RAPID LOSS OF ENGINE OIL AND EVENTUAL ENGINE FAILURE. DURING CRUISE FLIGHT FROM SAGINAW, MI TO PONTIAC, MI WHILE PASSING WITHIN 5 MILES FROM FLINT, MI AIRPORT, THE PILOT NOTICED A LOSS OF OIL PRESSURE. THE ENGINE STARTED KNOCKING AND AN EMERGENCY WAS DECLARED WITH THE FLINT TOWER. WHILE INBOUND TO FLINT ON A 2 MILE FINAL, THE ENGINE QUIT. A LANDING WAS MADE ON THE AIRPORT WITHOUT FURTHER INCIDENT.