Port Blair, Apr 7: The President, TDP, A&N Islands in a letter addressed to the Union Minister of Civil Aviation, Shri Ashok Gajapati Raju, a copy of which has been released to the press has requested for grant of concession to the Islanders in the flight service between Port Blair and Vizag scheduled to operate from Apr 9. The Party has requested concession for students studying in mainland colleges, senior citizens, physically handicapped persons, widow ladies, medical referred patients with attendants.