What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot reported this was the first flight after completion of an annual inspection. Shortly after departing Gillespie Field he observed a decrease in engine oil pressure. At this time, he decided to return back to Gillespie Field. A short time later the engine temperature increased with variouse engine noises followed by a complete loss of oil pressure. Then the airplane completely loss engine power. Unable to maintain altitude he elected to land on a street in a residental neighborhood. The aircraft contacted power lines and a telephone pole severing the right wing before coming to a complete stop. Total flight time was 25 minutes. NTSB findings concluded the engine vacuum pump mounting hardware were intalled without the required torque.
As the FAA filed it
PILOT REPORTED THIS WAS THE FIRST FLIGHT AFTER COMPLETION OF AN ANNUAL INSPECTION. SHORTLY AFTER DEPARTING GILLESPIE FIELD HE OBSERVED A DECREASE IN ENGINE OIL PRESSURE. AT THIS TIME, HE DECIDED TO RETURN BACK TO GILLESPIE FIELD. A SHORT TIME LATER THE ENGINE TEMPERATURE INCREASED WITH VARIOUSE ENGINE NOISES FOLLOWED BY A COMPLETE LOSS OF OIL PRESSURE. THEN THE AIRPLANE COMPLETELY LOSS ENGINE POWER. UNABLE TO MAINTAIN ALTITUDE HE ELECTED TO LAND ON A STREET IN A RESIDENTAL NEIGHBORHOOD. THE AIRCRAFT CONTACTED POWER LINES AND A TELEPHONE POLE SEVERING THE RIGHT WING BEFORE COMING TO A COMPLETE STOP. TOTAL FLIGHT TIME WAS 25 MINUTES. NTSB FINDINGS CONCLUDED THE ENGINE VACUUM PUMP MOUNTING HARDWARE WERE INTALLED WITHOUT THE REQUIRED TORQUE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.