Regulation 100 During flight: monitoring and termination
If necessary to ensure that the operator’s spaceflight activities are carried out safely, a spaceflight operator must monitor in real time—
the flight of a launch vehicle, authorised by a launch operator licence, until it reaches a stable orbit or completes sub-orbital activities, or
the flight of a launch vehicle, authorised by a launch operator licence or a return operator licence, on its return to land in the United Kingdom.
Where the launch vehicle has a flight safety system which is not an automated system, flight termination personnel must make a flight termination decision during the flight of that vehicle—
if at any time that vehicle malfunctions and that malfunction prevents the operator’s spaceflight activities being carried out safely,
if at any time a system—
used to monitor whether or not the launch vehicle remains fit for the operator’s spaceflight activities, or
used to detect a malfunction,
fails and that failure threatens the carrying out of the operator’s spaceflight activities safely, or
if it is necessary for any other reason which threatens or prevents the carrying out of the operator’s spaceflight activities safely.
In this regulation “system” includes hardware and software.