What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) During a VFR night cross country flight from hzl to tdz, N441AV experienced a complete engine failure in flight in the vicinity of Snow Shoe, PA. The aircraft impacted trees coming to rest on an inclinded ridge. The impact caused one fatality, the pilot privacy data omitted and serious injuries to the survivor privacy data omitted. Post crash investigation revealed that the cam/timing belt came loose due to the loss of the cam/timing belt idler pulley assembly. Inadequate tension on the timing belt caused the belt to slip, misfiring the spark plugs and damaging valves on two of the four cylinders. Due to the loss of the idler pulley assembly, the loose timing belt caused significant engine damage. The damage was significant enough to cause a complete engine shutdown in flight. The idler pulley assembly failed because of a modification to the manufacturer's original design.
As the FAA filed it
(-23) DURING A VFR NIGHT CROSS COUNTRY FLIGHT FROM HZL TO TDZ, N441AV EXPERIENCED A COMPLETE ENGINE FAILURE IN FLIGHT IN THE VICINITY OF SNOW SHOE, PA. THE AIRCRAFT IMPACTED TREES COMING TO REST ON AN INCLINDED RIDGE. THE IMPACT CAUSED ONE FATALITY, THE PILOT ^PRIVACY DATA OMITTED^ AND SERIOUS INJURIES TO THE SURVIVOR ^PRIVACY DATA OMITTED^. POST CRASH INVESTIGATION REVEALED THAT THE CAM/TIMING BELT CAME LOOSE DUE TO THE LOSS OF THE CAM/TIMING BELT IDLER PULLEY ASSEMBLY. INADEQUATE TENSION ON THE TIMING BELT CAUSED THE BELT TO SLIP, MISFIRING THE SPARK PLUGS AND DAMAGING VALVES ON TWO OF THE FOUR CYLINDERS. DUE TO THE LOSS OF THE IDLER PULLEY ASSEMBLY, THE LOOSE TIMING BELT CAUSED SIGNIFICANT ENGINE DAMAGE. THE DAMAGE WAS SIGNIFICANT ENOUGH TO CAUSE A COMPLETE ENGINE SHUTDOWN IN FLIGHT. THE IDLER PULLEY ASSEMBLY FAILED BECAUSE OF A MODIFICATION TO THE MANUFACTURER'S ORIGINAL DESIGN.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.