What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) A highly modified Cessna 150 with an unapproved engine and fuel system installaion in cruise flight experienced rapid and complete loss of oil pressure causing poor engine performance. The pilot was able to execute a successful forced open grass field landing under power. Evidence indicates that following the landing, uncommanded engine shutdown occurred. The loss of oil pressure appears to be due to an oil filter mount and transfer tube crack that caused: 1. The oil filter system housing/mount to break away from the engine block 2. Total engine oil loss 3. Engine oil starvation
As the FAA filed it
(-23) A HIGHLY MODIFIED CESSNA 150 WITH AN UNAPPROVED ENGINE AND FUEL SYSTEM INSTALLAION IN CRUISE FLIGHT EXPERIENCED RAPID AND COMPLETE LOSS OF OIL PRESSURE CAUSING POOR ENGINE PERFORMANCE. THE PILOT WAS ABLE TO EXECUTE A SUCCESSFUL FORCED OPEN GRASS FIELD LANDING UNDER POWER. EVIDENCE INDICATES THAT FOLLOWING THE LANDING, UNCOMMANDED ENGINE SHUTDOWN OCCURRED. THE LOSS OF OIL PRESSURE APPEARS TO BE DUE TO AN OIL FILTER MOUNT AND TRANSFER TUBE CRACK THAT CAUSED: 1. THE OIL FILTER SYSTEM HOUSING/MOUNT TO BREAK AWAY FROM THE ENGINE BLOCK 2. TOTAL ENGINE OIL LOSS 3. ENGINE OIL STARVATION