Service tax rate adjustment increases passenger air service levies and limits applicability to economy class, effective from April 1, 2011. Amendment revises the effective service tax charges for passenger air service by increasing specified monetary thresholds and restricting the scope in clause (a) from any class to economy class; clause (b) also substitutes a higher amount. The changes amend Notification No. 26/2010-Service Tax and take effect on 1 April 2011.