What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Aircraft was on its first flight after an annual inspection had been performed. The privacy data omittedpilot reported seeing a clear unknown liquid on his windscreen after he had taken off from Falcon field.
He requested to return to the airport for landing. The aircraft landed without further incident.
Maintenance looked over the aircraft and determined the fluid was fresh engine oil which was leaking from the crankshaft. It was determined the plug on the end of the crankshaft had not been properly installed after a required inspection. Maintenance replaced the plug and the aircraft has had no further issues with loss of engine oil.
As the FAA filed it
AIRCRAFT WAS ON ITS FIRST FLIGHT AFTER AN ANNUAL INSPECTION HAD BEEN PERFORMED. THE ^PRIVACY DATA OMITTED^PILOT REPORTED SEEING A CLEAR UNKNOWN LIQUID ON HIS WINDSCREEN AFTER HE HAD TAKEN OFF FROM FALCON FIELD.
HE REQUESTED TO RETURN TO THE AIRPORT FOR LANDING. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.
MAINTENANCE LOOKED OVER THE AIRCRAFT AND DETERMINED THE FLUID WAS FRESH ENGINE OIL WHICH WAS LEAKING FROM THE CRANKSHAFT. IT WAS DETERMINED THE PLUG ON THE END OF THE CRANKSHAFT HAD NOT BEEN PROPERLY INSTALLED AFTER A REQUIRED INSPECTION. MAINTENANCE REPLACED THE PLUG AND THE AIRCRAFT HAS HAD NO FURTHER ISSUES WITH LOSS OF ENGINE OIL.