Drone then crashed when raised on high (9)
I believe the answer is:
enthroned
'raised on high' is the definition.
'enthroned' can be an answer for 'high' (thesaurus). I am not certain of the 'raised on' bit.
'drone then crashed' is the wordplay.
'crashed' indicates an anagram.
'drone'+'then'='dronethen'
'dronethen' is an anagram of 'ENTHRONED'.
'when' acts as a link.
Can you help me to learn more?
(Other definitions for enthroned that I've seen before include "Installed (as monarch)" , "Honourably placed" , "Put in place" , "Made bishop" .)