It may have a good nap on the flight (5,6)

I believe the answer is:

stair carpet

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'it may have a good nap on the flight' is the definition.
I know that 'flight' relates to this answer.

'good nap on the flight' is the wordplay.
'good nap' becomes 'carpet' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' says to put letters next to each other.
'the flight' becomes 'stair' (I've seen this before).
'carpet' after 'stair' is 'STAIR-CARPET'.

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I've seen this clue in The Globe and Mail.

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