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12.102 Take-off Performance
12.102.2 Given typical performance data, demonstrate the ability to determine TODR
To determine the Takeoff Distance Required (TODR) for an aircraft, pilots must consider a number of factors, including the aircraft's weight, runway conditions, temperature, and altitude. Assuming a standard day with no wind, let's say we have a Boeing 737-800 with a takeoff weight of 140,000 pounds, on a dry runway at sea level. According to the aircraft's performance data, the required TODR is 6,500 feet. If the runway is wet instead of dry, the required TODR would increase to 7,500 feet. If the runway is contaminated with snow or ice, the required TODR would increase even further, to 8,500 feet. If the temperature is higher than standard, the required TODR would also increase. For example, if the temperature is 30°C instead of 15°C, the required TODR would increase to 7,500 feet. Finally, if the aircraft is at a high altitude airport, the required TODR would also increase. For example, if the aircraft is at an airport with an elevation of 5,000 feet, the required TODR would increase to 8,000 feet. Overall, pilots must consider a variety of factors when calculating the required TODR for an aircraft, and they must ensure that the aircraft is capable of taking off safely before attempting to do so.