Plane in trouble in Asia
I believe the answer is:
nepal
'in asia' is the definition.
('Nepal' is part of 'asia')
'plane in trouble' is the wordplay.
'in trouble' indicates an anagram.
'plane' anagrammed gives 'NEPAL'.
(Other definitions for nepal that I've seen before include "land" , "former kingdom" , "Plane country north-east of India" , "World's only Hindu kingdom" , "Country located mainly in the Himalayas" .)