Fast plane is not re-ordered - get rid of the cargo (8)
I believe the answer is:
jettison
'fast' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'plane is not re-ordered get rid of the cargo' is the wordplay.
I cannot really understand how this works, but
'plane' could be 'jet' (jet plane) and 'jet' is found in the answer.
'is' is present in the answer.
an anagram of 'not' is 'ton' which is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for jettison that I've seen before include "Abandon, discard" , "Throw (into the sea)" , "Eject" , "bin" , "21 [OFFLOAD]" .)