Air traveller possibly hurt by a bit of a crash (6)
I believe the answer is:
thrush
'air traveller' is the definition.
The answer and definition can be both states of affairs as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'possibly hurt by a bit of a crash' is the wordplay.
'possibly' indicates anagramming the letters.
'by' means one lot of letters go next to another.
'a bit of a crash' becomes 'sh' (I can't explain this - if you can you should give a lot more credence to this answer).
'hurt' is an anagram of 'thru'.
'thru'+'sh'='THRUSH'
Can you help me to learn more?
(Other definitions for thrush that I've seen before include "Infection of the mouth and throat" , "Small songbird" , "Common British songbird" , "Songbird - fungal infection" , "Speckle-breasted songbird" .)