Service tax exemption for regional air passengers covering specified northeast states and Bagdogra airport, made effective July. Exemption of service tax on air passenger transport applies where passengers embark or terminate journeys at airports in the listed northeastern states and Bagdogra; the exemption removes the whole of service tax leviable under section 66 for such passengers, was brought into force on the first day of July, and was later rescinded by a subsequent notification dated 20 June 2012.