Engineers call, putting things right (8)
I believe the answer is:
remedial
'putting things right' is the definition.
(I've seen this before)
'engineers call' is the wordplay.
'engineers' becomes 'reme' (Royal Electrical and Mechanical Engineers).
'call' becomes 'dial' (as in making a phone call).
'reme'+'dial'='REMEDIAL'
(Other definitions for remedial that I've seen before include "'Therapeutic, healing (8)'" , "Putting things right" , "Intended to counteract loss" , "Intended to put right" , "I'm leader of curative sort" .)