Fallen angel

You may be looking for the Fallen Angel or short story of the same name.

A fallen angel was the name that the Department used for crashed alien spacecraft in 2050. (TV: Regeneration ^[+]Loading...["Regeneration (TV story)"])

The Department recovered parts for the STM from a Korven fallen angel. (TV: Regeneration ^[+]Loading...["Regeneration (TV story)"], Angel of the North ^[+]Loading...["Angel of the North (TV story)"])

K9 asked if he was considered a fallen angel because his mem drive had crashed. (TV: Regeneration ^[+]Loading...["Regeneration (TV story)"])

June Turner asked Drake about a Mede spacecraft that had crashed. Drake had a schematic for it on his computer and was trying to recreate the molecular refractor from the spacecraft. (TV: Alien Avatar ^[+]Loading...["Alien Avatar (TV story)"])

Drake wanted to use fallen angel technologies to control the human population. (TV: Black Hunger ^[+]Loading...["Black Hunger (TV story)"])