What happened
A cross-country flight traveling from Florida to Texas diverted to Louisiana due to en route weather. The pilot, an instrument-rated private pilot and sole occupant, had purchased the single-engine airplane 10 days before the accident and had completed an instrument competency check two days prior. No aircraft discrepancies were noted during recent instructional flights.
On the morning of the accident, the pilot obtained a preflight weather briefing and filed an IFR flight plan for conditions involving night instrument meteorological conditions (IMC). During takeoff clearance, the controller noted that the aircraft was not equipped with weather detection or avoidance equipment.
While cruising at 4,000 feet MSL, the airplane turned to a heading of 220 degrees, paralleling a line of thunderstorms. The pilot reported experiencing light to moderate chop. The controller then notified the pilot of a convective SIGMET for an area of severe thunderstorms featuring tornadoes, two-inch hail, and 60-knot wind gusts. In response to the weather update, the pilot expressed concern regarding his position in the weather and requested that the controller assist in keeping the aircraft clear of the storms.
The controller advised that a heading of 230 degrees would be necessary for approximately 50 miles before a westbound turn could be made. At 0619:38, the flight was cleared to a heading of 240 degrees. By 0621:35, the pilot asked for an alternative route, and at 0621:41, reported that the weather had become "pretty severe."
Radar track data indicated that around 0620, the aircraft experienced altitude and airspeed excursions consistent with moderate to severe turbulence. Although the controller cleared the pilot to turn west to a heading of 270 degrees at 0621:44, radio and radar contact were lost at 0624:05. Houston Center tracked a descending target to 2,700 feet approximately 20 nautical miles offshore southeast of Lake Charles, Louisiana. The pilot is presumed fatal and the aircraft is presumed destroyed. An extensive air and sea search was unsuccessful.