Simple but successful conclusion to parachute jump (11)

I believe the answer is:

downtoearth

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'simple but successful conclusion' is the definition.
I know nothing about this answer so I can't judge whether this works.

'to parachute jump' is the wordplay.
I cannot really see how this works, but
'to' is within the answer.
This may be the basis of the clue (or it may be nonsense).

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I've seen this clue in The Irish Times.

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