Crossword Genius

Rent airbase out? That's a puzzle (5,6)

Ross

I believe the answer is:

brain teaser

'that's a puzzle' is the definition.
(I've seen this before)

'rent airbase out?' is the wordplay.
'out?' is an anagram indicator (out can mean wrong or inaccurate).
'rent'+'airbase'='rentairbase'
'rentairbase' is an anagram of 'BRAIN-TEASER'.

(Other definitions for brain teaser that I've seen before include "puzzle" , "tricky problem" , "dilemma" .)

I've seen this clue in The Daily Express.
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