Incident Overview
A pilot conducting a left downwind departure reported no malfunctions during the pre-takeoff run-up. After receiving clearance, the pilot began the departure from the downwind leg. Shortly after, a vibration was felt on the yoke, prompting the pilot to return for landing. Approximately 10 seconds later, the vibration intensified significantly, becoming violent. An explosion occurred, filling the cabin with smoke. A second explosion followed, during which the cowling separated from the right side of the aircraft and struck the windshield.
Emergency Landing
The pilot executed an emergency landing in a residential area. During the landing sequence, the aircraft struck a tree and a vehicle. The final landing location was in a residential neighborhood. Details regarding occupants, injuries, or damage to the aircraft beyond the cowling and engine issues are not provided in the source.
Post-Accident Examination
An examination of the engine revealed that the No. 3 cylinder had separated from the engine. Furthermore, the hold-down nuts for cylinders No. 1 and No. 5 were found to be hand tight, indicating insufficient torque. No other mechanical anomalies were explicitly noted.
Maintenance Records Review
A review of the maintenance records showed no evidence of cylinder removals since the last engine overhaul, which occurred in 1982. The overhaul was performed 55 hours prior to the accident. The source does not specify any maintenance actions or inspections between the overhaul and the accident.
Additional Context
The source does not specify the aircraft type, registration, date, operator, location, number of engines, occupants, injuries, or time of day. It also does not mention weather conditions or air traffic control involvement beyond the clearance for departure. The pilot's actions and the sequence of events are derived solely from the provided narrative.