Falcon 9 is equipped with an Autonomous Flight Termination System to be used in the unlikely event that the rocket drifts off course or becomes unresponsive. Carbon fiber landing legs and hypersonic grid fins, all stowed during ascent, are two of the critical elements essential to ensure safe and successful landing of the Falcon 9 first stage. Technical Overview • Height: 70 meters or 229.6 feet • Mass: 549,054 kilograms or 1,207,920 pounds • Payload to Low Earth Orbit: 22,800 kilograms or 50,265 pounds • Diameter: 3.7 meters or 12 feet