N461MMMiller Raymond A WAIEX (SONEX) · 2013

On October 3, 2014, about 0935 eastern daylight time, an experimental amateur-built Sonex Waiex, N461MM, owned and operated by a private individual, was substantially damaged when it impacted terrain about 10 minutes after takeoff from the Flagler County Airport (XFL), Palm Coast, Florida. The private pilot was fatally injured. Visual meteorological conditions prevailed and no flight plan had been filed for the local personal flight that was conducted under the provisions of 14 Code of Federal Regulations Part 91.

The XFL airport manager reported that the airplane had been based at the airport for about 6 months.

According to air traffic control information obtained from the Federal Aviation Administration (FAA), the airplane was cleared for a northeast departure from runway 6, at 0926, which the pilot acknowledged. Approximately 3 minutes later, the pilot was instructed to proceed on course and report clear of the "class delta" airspace. There were no further communications received from the pilot. Primary radar targets consistent with the accident flight revealed that the airplane made a left turn after takeoff and flew northbound, before turning westbound about 0933, where it flew for about 2 minutes, before radar contact was lost. The last two radar targets indicated a northbound turn; however, the accident site was located approximately 1/4 mile west-southwest of the last radar target.

A witness, located in a residential community about 2.5 miles south of the accident site reported that he observed a white/silver single-engine airplane flying overhead sometime between 0900 and 1000. The airplane was approximately 1,000 feet above the ground, and flying to the north when it experienced a sudden, complete loss of engine power. The airplane turned to the left and completed two circular patterns before disappearing from his view. He did not hear any engine noise or sounds associated with an accident, and assumed that the pilot of the airplane performed a successful emergency landing to a nearby former golf course.

According to the pilot's son, when the pilot failed to meet a family member on the evening of October 3rd, local authorities were contacted. The pilot's car was subsequently found in front of his hangar at XFL. The hangar doors were open and the pilot's son believed the pilot most likely elected to make a local solo flight in the airplane, which he had not flown solo previously. Radar data and mobile telephone position information were utilized to help determine the airplane's location. The airplane was subsequently found on October 4th, in a tidal marsh near Pellicer Creek, about 13 miles north-northwest of XFL. It was recovered on October 9th.

The pilot, age 77, held a private pilot certificate with a rating for airplane single-engine land that was issued in 1972. The pilot's logbook was not recovered. The pilot reported 150 hours of total flight experience, which included 5 hours in the make and model of the accident airplane on an insurance application dated February 12, 2014.

A search of FAA airman medical records did not reveal any medical certification records for the pilot; however, it was noted that airman medical records with no identified pathology from prior to about 1998 were not uploaded into the current electronic system. The pilot held a Florida driver's license, and did not hold any FAA-issued mechanic or repairman certificates.

According to FAA records, the single-engine, fixed-gear, all-metal, "Y-tail," two-seat monoplane, serial number WO156, was built by the pilot from a kit that was purchased during September 2010, and issued an FAA special airworthiness certificate as an experimental amateur-built airplane on January 15, 2013. The airplane was equipped with an 80-horsepower, AeroVee 2180 engine, with a Sensenich two-blade wood propeller assembly.

The airplane's maintenance logbooks were not located, and it total hours of operation and progress through phase I flight testing could not be confirmed. The pilot's son indicated that the airplane was likely last flown when it was repositioned from Fort Pierce, Florida, to XFL, about 6 months prior to the accident. According to XFL fueling records, the only fuel purchased by the pilot for the airplane was 5 gallons of 100-low-lead aviation gasoline, on September 11, 2014. Recovery personnel reported that the airplane's 16-gallon fuel tank was half-full of fuel at the time of the recovery.

A friend of the pilot reported that the airplane was originally built and was being maintained by the pilot. He believed that the airplane had been operated for a total of 5 total hours, and that the pilot had flown in it with a flight instructor for less than 3 hours. He further reported that the airplane had been experiencing issues with its fuel system since prior to its departure from Fort Pierce; which included fuel leaks, and required the pilot to perform several adjustments to the fuel metering system.

The engine was not equipped with a traditional carburetor. It utilized an AeroInjector with a "throttle slide" to meter combustion air and fuel, and a tapered needle valve to control in-flight mixture adjustments and serve as an idle cut-off valve.

A weather observation taken at XFL, at 0950, reported: wind from 150 degrees at 3 knots, 7 statute miles visibility, a broken cloud ceiling at 5,500 feet, temperature 26 degrees Celsius (C), dew point temperature 23 degrees C, and an altimeter setting of 30.05 inches of mercury.

According to FAA records, the single-engine, fixed-gear, all-metal, "Y-tail," two-seat monoplane, serial number WO156, was built by the pilot from a kit that was purchased during September 2010, and issued an FAA special airworthiness certificate as an experimental amateur-built airplane on January 15, 2013. The airplane was equipped with an 80-horsepower, AeroVee 2180 engine, with a Sensenich two-blade wood propeller assembly.

The airplane's maintenance logbooks were not located, and it total hours of operation and progress through phase I flight testing could not be confirmed. The pilot's son indicated that the airplane was likely last flown when it was repositioned from Fort Pierce, Florida, to XFL, about 6 months prior to the accident. According to XFL fueling records, the only fuel purchased by the pilot for the airplane was 5 gallons of 100-low-lead aviation gasoline, on September 11, 2014. Recovery personnel reported that the airplane's 16-gallon fuel tank was half-full of fuel at the time of the recovery.

A friend of the pilot reported that the airplane was originally built and was being maintained by the pilot. He believed that the airplane had been operated for a total of 5 total hours, and that the pilot had flown in it with a flight instructor for less than 3 hours. He further reported that the airplane had been experiencing issues with its fuel system since prior to its departure from Fort Pierce; which included fuel leaks, and required the pilot to perform several adjustments to the fuel metering system.

The engine was not equipped with a traditional carburetor. It utilized an AeroInjector with a "throttle slide" to meter combustion air and fuel, and a tapered needle valve to control in-flight mixture adjustments and serve as an idle cut-off valve.

The majority of the airplane was buried in mud/water. The empennage and portions of structure associated with both wings were visible to varying degrees depending on the tide. The rudder, both stabilizers and elevators remained attached and were relatively undamaged except for aft compression along the left stabilizer leading edge.

The wreckage was examined by FAA inspectors on October 17, 2014. According to an FAA inspector, the examination revealed that all major portions of the airframe were accounted for. The engine was separated from the airframe, and the cockpit and cabin areas were destroyed. Both wings were crushed aft and bent back to the fuselage. The rudder and elevator control surfaces remained attached to the airframe and connected to the respective control surfaces; however, due to significant impact damage, flight control continuity could not be confirmed.

The propeller was separated from the engine and displayed no evidence consistent with rotation. One blade was fractured near the hub and the other propeller blade remained attached to the hub and was undamaged.

The engine sustained significant impact damage. The front of both valve covers were impact damaged and the exhaust tubes were crushed and bent back. The engine's crankshaft could not be rotated due impact damage and contamination from mud; however, all cylinder valves were intact and could be manually actuated by depressing their respective springs. In addition, the valve assemblies and cylinders were disassembled for inspection, which revealed no anomalies. The crankshaft was intact. All connecting rods were intact and remained connected with no evidence of abnormal distress. The engine's AeroInjector fuel metering unit was impact damaged. Its fuel line assembly remained intact and the inline throttle valve was in the open position. The fuel mixture position could not be determined. The ignition system data plate was recovered; however, no other components from the ignition system except the spark plugs and portions of the spark plugs ignition leads were recovered. All spark plugs were removed. Their electrodes were undamaged and free of contamination.

An autopsy was performed on the pilot by the Office of the District 23 Medical Examiner, St. Augustine, Florida, on October 10, 2014. No natural disease was identified; however, the autopsy was limited due to the condition of the recovered remains. The autopsy report identified the cause of death as multiple blunt force injuries.

Toxicological testing performed on the pilot by the FAA Bioaeronautical Science Research Laboratory, Oklahoma City, Oklahoma, detected ethanol in muscle (0.82 gm/fl) and liver (0.082 gm/dl), as well as n-butanol and n-propanol; however, the samples displayed putrefaction. Additionally, diphenhydramine, citalopram, and its metabolite n-desmethylcitalopram were detected in liver and muscle.

A representative from the pilot's family stated that the pilot lived an active lifestyle and was in good health. He was not aware of any medical conditions that may have contributed to the accident.