Experimenter is a magazine created by EAA for people who build airplanes. We will report on amateur-built aircraft as well as ultralights and other light aircraft.
Issue link: http://experimenter.epubxp.com/i/113663
right fuel tank selected. When electric power was applied, the electric fuel pump emitted drops of a liquid consistent with the smell of aviation gasoline. Flight control cables and linkages were traced, and all breaks were consistent with overload. Engine control cables were traced, and all breaks were consistent with overload. The left magneto sustained damage and was not able to be tested. The right magneto sustained damage, and it produced spark from its center electrode when it was rotated. The top spark plugs were removed. The spark plugs were gray in color, and no anomalies were detected. The engine-driven fuel pump was torn off its base. A disassembly of the engine-driven fuel pump revealed no pre-impact anomalies. The fuel injection distribution valve was disassembled, and no anomalies were detected. The engine exhibited a thumb compression at all cylinders. The fuel servo sustained damage, and its mixture control shaft had separated outboard of its mixture control stop. The hose to the fuel servo screen contained drops of a liquid consistent with the smell of aviation gasoline. The fuel servo screen was free of debris. The oil filter canister was removed, and no debris was observed. Figure 9—Secondary electron (SE) micrograph of the lef propeller shaf fracture surface, showing fatigue striations near a pore defect, afer cleaning. Te boxed area is shown in Figure 10. Subsequent to the on-scene examination, the propeller shafts were examined by FAA inspectors, and the left propeller shaft tube exhibited a separation at its aft weld. The left and right propeller shafts were shipped to the NTSB Materials Laboratory for detailed examination. … Tests and Research Dynon EMS-D10 According to an NTSB Vehicle Recorder Laboratory Recorded Data Factual Report, the Dynon EFIS-D100 unit sustained major damage from impact forces. An internal inspection was performed, and it was determined that the unit could not be rebuilt for download. … Figure 10—SE micrograph of the boxed area in Figure 9, showing fatigue striations. Garmin GPSMAP 196 According to an NTSB Vehicle Recorder Laboratory Recorded Data Factual Report, the Garmin GPSMAP 196 unit sustained major damage from impact forces, and it was determined that the unit could not be rebuilt for download. … The GPS unit's data revealed the accident airplane's flight path, and it recorded data until 1044:57 where the last recorded ground speed was 55 knots. The NTSB Vehicle Recorder Laboratory Recorded Data Factual Report is appended to the docket associated with this investigation. Contour HD Video Camera The SD memory card was placed in a memory card reader. A 2-megabyte file was recovered from the SD memory Figure 11—Secondary electron (SE) micrograph of the right propeller shaf fracture surface, showing fatigue striations that developed at the unwelded areas of the forward weld, afer cleaning. EAA Experimenter 33