Sport German helmet in execution (4,7)

I believe the answer is:

hang gliding

'sport' is the definition.

'german helmet in execution' is the wordplay.
'german' becomes 'g' (abbreviation).
'helmet' becomes 'lid' (slang for crash helmet).
'in' means one lot of letters goes inside another.
'execution' becomes 'hanging' (hanging is a kind of execution).
'g'+'lid'='glid'
'glid' put within 'hanging' is 'HANG-GLIDING'.

(Another definition for hang gliding that I've seen is " Sport of flying off a cliff or hillside".)

I've seen this clue in The Independent.

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