Detailed study onboard can be carried out (8)
I believe the answer is:
portable
'carried out' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives occasionally mean the same thing.
'detailed study onboard' is the wordplay.
'detailed' means to remove the last letter (the word must be end-less or 'de-tailed').
'study' becomes 'pore' (I've seen this in another clue).
'onboard' becomes 'table' (I can't justify this - if you can you should believe this answer much more).
'pore' with its last letter taken off is 'por'.
'por'+'table'='PORTABLE'
'can be' acts as a link.
Can you help me to learn more?
(Other definitions for portable that I've seen before include "easy to bear?" , "Handy - lightweight" , "desirable type of pension" , "Laptop, for example" , "Easily transported" .)