Object
Pin in Rocket Servo Plug
A small metal part nested inside one of the rocket's servo plugs controls fuel pump pressure. Doctor Barclay points it out as Ben's sabotage target: crawl the ventilation shaft, snip the pin, and pressure drops to zero at blast-off. Ben nods, ready for the risk; Polly preps her distraction. Cybermen klaxons blare as Barclay sketches the path, shifting the group from deadlock to desperate action.
4 appearances
Purpose
Regulates fuel pump pressure during rocket launch; snipping severs function to prevent blast-off
Significance
Pivotal sabotage element that hands companions control over Cybermen rocket launch, forcing Barclay's defection and Ben's heroism amid invasion countdown
Appearances in the Narrative
When this object appears and how it's used