What information can be found in aircraft performance charts?

Aircraft performance charts provide crucial data that assists pilots in understanding how an aircraft will perform under various conditions. This information typically includes critical performance metrics such as speeds for takeoff, landing, and climb, fuel consumption rates, weight limitations, and climb rates under different atmospheric conditions. These charts are essential for flight planning and ensuring safe operations, as they allow a pilot to calculate the aircraft's performance capabilities in relation to the weight of the aircraft, the altitude, temperature, and other environmental factors. Thus, option C accurately captures the type of information provided by aircraft performance charts, which is vital for conducting safe and efficient flights.

The other options, while relevant to aviation, do not pertain specifically to the performance of the aircraft itself as derived from charts. Weather patterns and forecasts are available from meteorological sources, airway navigation and routes are plotted in navigation charts, and regulatory requirements for pilots can be found in aviation regulations and not in performance charts.