On October 1, 2014, at an unknown time, an unregistered amateur-built Air Command 582 gyroplane was substantially damaged when it impacted terrain near Rostraver Airport (FWQ), Monongahela, Pennsylvania. The private pilot was fatally injured. Visual meteorological conditions prevailed, and no flight plan was filed for the presumed local personal flight, which was conducted under the provisions of Title 14 Code of Federal Regulations Part 91.During a telephone interview, a friend of the accident pilot stated that the pilot had purchased the single-seat gyroplane in the spring of 2014 and wanted to get additional training with a flight instructor. After the training, the pilot advised his friend that he was "good to go," and he subsequently made several flights in the vicinity of FWQ. On the day of the accident, the pilot was scheduled to meet some friends around 1800, and the friend became concerned when the pilot could not be located by 2030. He called 911 around 2100. According to the Westmorland County, Pennsylvania Coroner's Summary Report, the wreckage was located on October 2 about 0915, in an area of vegetation located about 750 feet east of the runway 26 threshold at FWQ. A witness, who was flying his helicopter in the traffic pattern at FWQ on the day of the accident, stated that he watched the pilot depart and fly around the vicinity of the airport for at least 45 minutes to 1 hour. He did not witness the accident, but did recall seeing the pilot still flying later that day as he conducted business on the airport ramp and in the terminal building. Examination of the airframe by Federal Aviation Administration (FAA) inspectors did not reveal evidence of any obvious mechanical deficiencies. Two of the three propeller blades were separated about 1-foot outboard of the propeller hub, while the third blade remained intact. The gyroplane was recovered from the accident site and its engine was separated from the airframe and test run. The engine started normally and ran with no anomalies noted. The pilot held a private pilot certificate with a rating for airplane single engine land, and his most recent FAA third-class medical certificate was issued on August 12, 2014. According to the accident pilot's gyroplane flight instructor, who was located in Georgia, the accident pilot came to him in August 2014 seeking flight instruction. The flight instructor conducted 4.8 hours of dual flight instruction with the accident pilot, along with some ground instruction. After their last flight together, the flight instructor endorsed the pilot's logbook for solo flight, but prescribed a restriction that the pilot could not fly higher than 5 feet. The endorsement also did not allow the pilot to fly in an airport traffic pattern solo. The flight instructor further advised the pilot to bring the accident gyroplane back to Georgia so that they could continue their training. When asked about the accident gyroplane, the flight instructor stated that the pilot had recently purchased it and was waiting for the registration paperwork to be completed by the FAA, and to have it inspected by a mechanic before he flew it. When asked about the circumstances of the accident flight, the flight instructor was surprised to hear that the wreckage was located so far from the runway. Review of a pilot logbook revealed that the pilot had logged 3.0 hours of ground instruction and 6.1 hours of flight training with the flight instructor on August 15, 2014. The flight was logged over two entries, both of which occurred at Macon Downtown Airport (MAC), Macon, Georgia. An endorsement in the logbook signed by the flight instructor stated, that he had flown with the pilot and, "…found him safe and competent to operate his Air Command Gyro Plane. Ground taxi, balance and in ground effect. Wind restriction of 10 mph, daytime." The logbook contained 14 additional entries for flights conducted between August 20 and September 29, 2014, with a total flight time logged of 11.6 hours. None of the flights were logged as dual instruction received, nor did any of the entries contain an endorsement of a flight instructor. The first 7 entries had accompanying remarks that included comments similar to, runway, taxiing, spinning rotors, balancing on mains, hops, crosswind control, rotor brake control. Beginning on September 20, 2014, the final 7 flights logged over the course of 6.7 flight hours contained remarks that included descriptions similar to, closed pattern, landings, turns, slow flight, 8 gust 11 at 220, turns at point, flat spins, vertical descents. No airworthiness history, maintenance, or aircraft registration records could be located for the accident gyroplane. An autopsy was performed on the pilot by Cyril H. Wecht and Pathology Associates, Inc. Pittsburgh, Pennsylvania. According to a summary report prepared by the Office of the Coroner, Westmoreland County, Pennsylvania, the cause of death was blunt force injuries. Toxicological testing performed by the FAA's Civil Aerospace Medical Institute found no trace of ethanol, carbon monoxide, or other drugs present in the samples submitted for the pilot.