Crossword Genius

Inspection by nuns possibly finds guinea pig (4,5)

Ross

I believe the answer is:

test pilot

I'm a little stuck... Click here to teach me more about this clue!

'guinea pig' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'inspection by nuns possibly' is the wordplay.
'inspection' becomes 'test'.
'by' is a charade indicator (letters next to each other).
'nuns possibly' becomes 'pilot' (I can't justify this - if you can you should believe this answer much more).
'test'+'pilot'='TEST PILOT'

'finds' acts as a link.

Can you help me to learn more?

(Other definitions for test pilot that I've seen before include "one occupying 21 [COCKPIT]" , "Alan Shepard once?" , "Airman" , "Highly dangerous job" , "One might check bombers" .)

I've seen this clue in The Sunday Times.
Want a hint initially instead of a full solution? Install my app