1. A Flight Termination System (FTS) consists of the components onboard a launch vehicle that provide the ability to end that vehicle's flight in a controlled manner.
2. An FTS may comprise different types of equipment or procedure, including: a self-destruct system for remote initiation, a separation system, a parachute release system or any other systems or components onboard the launched vehicle that may be used to terminate flight.
3. In order to increase flight safety, these kind of systems must be completely independent. For this reason an FTS must have its own dedicated communications datalink. In case of autopilot or communications error, the FTS will therefore still be capabable of terminating the flight.