Find the minimal cut sets

A fault tree starts at a top event and walks down through gates. An OR gate is true if any input is true. An AND gate is true only when every input is true. A minimal cut set is the smallest set of basic events that is enough to cause the top event.

Loss of telemetry is the top event. Dashed boxes are basic events. Check every minimal cut set. Leave out a set that cannot cause the top event, and leave out a set that contains a smaller cut set.