Punishing for plane crash (5)
I believe the answer is:
penal
'punishing' is the definition.
(I've seen this before)
'plane crash' is the wordplay.
'crash' indicates anagramming the letters.
'plane' is an anagram of 'PENAL'.
'for' acts as a link.
(Other definitions for penal that I've seen before include "Punitive" , "Relating to legal punishment" , "Very severe" , "Corrective" , "Punishable by law" .)