From the helicopter I'm surveying the borders (4)

I believe the answer is:

rims

'the borders' is the definition.
(rim can mean an edge or border)

'from the helicopter i'm surveying' is the wordplay.
'from' indicates the answer is hidden within the clue.
'RIMS' is hidden in the letters of 'helicopter im surveying'.

(Another definition for rims that I've seen is " Edges".)

I've seen this clue in The Irish Independent.

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