As per exemtion list vide item no. 23 in notification no. 25/2012, dt 20th June, 2012, Transport of passengers by air embarking from or terminating in an airport located in the NE states is a exempted service.
In case aircraft is provided on wet lease for use of PASSANGER SERVICE only between two NE states,whether lease rent charged would qualify for this exeption. In my view this should be exemped as aircraft use ifor eligible purpose.
Thanks,
CA. R.K. Aggarwal
TaxTMI