N2209WPiper PA-28-181 · 1979

On February 12, 2016, about 1850 central standard time, a Piper PA-28-181, N2209W, was destroyed during collision with water while maneuvering to land at Destin Executive Airport (DTS), Destin, Florida. The private pilot and a passenger were fatally injured. The flight departed Pearland Regional Airport (LVJ), Pearland, Texas, about 1715. Night visual meteorological conditions prevailed, and no flight plan was filed for the personal flight, which was conducted under the provisions of Title 14 Code of Federal Regulations Part 91.According to radar data from the Federal Aviation Administration (FAA), the airplane approached DTS from the west, and transitioned along the shore on the south side of the airport for landing on runway 32. The radar track depicted the airplane crossing the approach end of runway 32, then turning upwind on the east side of the runway. The airplane continued in a left circuit around the airport, and its altitude varied between 500 and 700 feet mean sea level (msl).

The radar depicted a left turn in a location consistent with a left base turn for landing on runway 32. Instead of continuing to an approximate ground track of 050 degrees for the base leg of the traffic pattern, the airplane rolled out on an approximate ground track of 090 degrees, and flew through the final approach course, west to east, as it tracked parallel to the coast. The airplane then turned 90 degrees to the south and tracked out over the water. The last radar target showed the airplane at 175 feet msl at 128 knots groundspeed.

A witness, who was monitoring the CTAF as he approached the airport in his own airplane, reported he heard the accident pilot announce his go-around and his positions as he circumnavigated the airport. The pilot's last radio call announced he would be "circling somewhere." There were no further communications from the accident airplane. The witness reported windy conditions as he approached DTS, and that conditions were "extremely bumpy" below 300 feet.

A witness who was jogging in an easterly direction along the beach reported to an FAA inspector that his attention was drawn to the airplane as it crossed the beach and headed south over the water. He stated that the engine was running, but the front of the airplane was illuminated as if the engine was "on fire." The witness stated he thought the airplane was in a wings-level attitude, not turning, but descending rapidly. He said that when the airplane struck the water, he heard an explosion and the light at the front of the airplane "went out."

The weather reported at DTS at the time of the accident included clear skies and wind from 240 degrees at 7 knots gusting to 15 knots. Official sunset was at 1731, and the end of civil twilight was at 1755. The moon was illuminated 13 percent in the western sky.

According to FAA records, the pilot held a private pilot certificate with a rating for airplane single engine land. His most recent FAA third-class medical certificate was issued on March 3, 2014. The pilot reported 306 total hours of flight experience on that date. The pilot did not possess an instrument rating.

Toxicological testing was performed on the pilot by the FAA Bioaeronautical Sciences Research Laboratory, Oklahoma City, Oklahoma. Results were negative for all tested-for drugs. The Office of the Medical Examiner, District I, Florida, performed an autopsy on the pilot. The cause of death was listed as multiple blunt force injuries.

The four-seat, single-engine, low-wing airplane was manufactured in 1979, and was equipped with a Lycoming O-360 series reciprocating engine. The maintenance logbooks for the airplane were not recovered, but copies of logbook entries revealed the airplane's most recent annual inspection was completed May 8, 2015, at 2,239 total aircraft hours. On February 9, 2016, the engine oil was changed at 2,272 total aircraft hours.

The airplane was recovered from the Gulf of Mexico and moved to a secure facility for a detailed examination. According to the FAA inspector on site during the recovery, the airplane was destroyed by impact forces. Except for a large section of the right wing, all major components of the airplane were accounted for. The engine, with the propeller attached, was completely entangled with the instrument panel, control cables, and wiring. All damage appeared consistent with impact and overload-type separation. There was no evidence of pre- or post-impact fire.

The engine was removed from the airframe, and could not be rotated by hand at the propeller. Examination of the cylinders with a lighted borescope revealed that each contained sediment and corrosion from salt water immersion. The engine accessories and all four cylinders were removed, and the crankshaft rotated freely by hand.

The propeller spinner was fragmented. The propeller remained attached to the engine crankshaft flange. One propeller blade exhibited scratches on the front and rear surfaces but was otherwise intact. The other blade was curved aft about 90 degrees and exhibited twisting, leading edge gouges and trailing edge "S" bending.

Impact damage and saltwater immersion precluded testing of engine accessories. The vacuum pump was disassembled and the carbon rotor, carbon vanes, and the composite drive coupling were intact.

The examination of the airframe and engine revealed no preimpact mechanical anomalies that would have prevented normal operation of the airplane.

Spatial Disorientation

According to FAA Advisory Circular AC 60-4A, "Pilot's Spatial Disorientation," tests conducted with qualified instrument pilots indicated that it can take as long as 35 seconds to establish full control by instruments after a loss of visual reference of the earth's surface. AC 60-4A further states that surface references and the natural horizon may become obscured even though visibility may be above VFR minimums, and that an inability to perceive the natural horizon or surface references is common during flights over water, at night, in sparsely-populated areas, and in low-visibility conditions.

According to the FAA Airplane Flying Handbook (FAA-H-8083-3), "Night flying is very different from day flying and demands more attention of the pilot. The most noticeable difference is the limited availability of outside visual references. Therefore, flight instruments should be used to a greater degree.… Generally, at night it is difficult to see clouds and restrictions to visibility, particularly on dark nights or under overcast. The pilot flying under VFR must exercise caution to avoid flying into clouds or a layer of fog." The handbook described some hazards associated with flying in airplanes under VFR when visual references, such as the ground or horizon, are obscured. "The vestibular sense (motion sensing by the inner ear) in particular tends to confuse the pilot. Because of inertia, the sensory areas of the inner ear cannot detect slight changes in the attitude of the airplane, nor can they accurately sense attitude changes that occur at a uniform rate over a period of time. On the other hand, false sensations are often generated; leading the pilot to believe the attitude of the airplane has changed when in fact, it has not. These false sensations result in the pilot experiencing spatial disorientation."