This visualization shows flight trace data from the CMAPSS dataset, displaying sensor readings over time for selected aircraft units. Users can switch between y-axis attributes (Altitude or TRA) and select different units via dropdown menus. The scatter plot uses d3.scaleLinear for both axes, with data loaded asynchronously from CSV files via d3.csv. React manages the interactive state for attribute and unit selection, while the SVG rendering is handled entirely through React elements rather than d3 selection methods.