What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On July 20, 2001, at approximately 1520 CDT, Beech 58P, N6035S, experienced a loss of LH engine oil pressure during cruise operations at 25,000 feet. The PIC shut down the LH engine and diverted to Eppley Airfield in Omaha, Nebraska. The PIC did not declare an emergency, and landed without further incident. No injuries were reported. Subsequent investigation disclosed that maintenance personnel had removed the air conditioning compressor drive sheave, Continental pn 640801, which allowed the displacement of the engine accessory section oil seal, pn 642383.
As the FAA filed it
(-23) ON JULY 20, 2001, AT APPROXIMATELY 1520 CDT, BEECH 58P, N6035S, EXPERIENCED A LOSS OF LH ENGINE OIL PRESSURE DURING CRUISE OPERATIONS AT 25,000 FEET. THE PIC SHUT DOWN THE LH ENGINE AND DIVERTED TO EPPLEY AIRFIELD IN OMAHA, NEBRASKA. THE PIC DID NOT DECLARE AN EMERGENCY, AND LANDED WITHOUT FURTHER INCIDENT. NO INJURIES WERE REPORTED. SUBSEQUENT INVESTIGATION DISCLOSED THAT MAINTENANCE PERSONNEL HAD REMOVED THE AIR CONDITIONING COMPRESSOR DRIVE SHEAVE, CONTINENTAL PN 640801, WHICH ALLOWED THE DISPLACEMENT OF THE ENGINE ACCESSORY SECTION OIL SEAL, PN 642383.