Crossword Genius

MP in France I involved in projects that take off immediately? (4,4)

Ross

I believe the answer is:

jump jets

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

'take off immediately?' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'mp in france i involved in projects' is the wordplay.
'in france i' becomes 'je' ('I' in French).
'involved in' is an insertion indicator.
'projects' becomes 'juts' (I've seen this in another clue).
'mp'+'je'='mpje'
'mpje' inserted inside 'juts' is 'JUMP JETS'.

'that' acts as a link.

Can you help me to learn more?

(Other definitions for jump jets that I've seen before include "planes" , "In West Side Story, what the Sharks tried to do" .)

I've seen this clue in The Times.
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