S. 260A : Appeal-High Court-Delay of 40 days-Service of ITAT order on Chartered Accountant not specifically authorised to accept service-Chartered Accountant not a recognised agent of assessee-Tribunal bound to communicate order to assessee-Delay condoned. [S. 254(3), 282, ITAT R. 35, Code of Civil Procedure, 1908,Order, 3, 5, R. 12]