S. 282: Service of notice-Appellate Tribunal-Service of order of Tribunal-Service upon authorised representative-Limitation-Condonation of delay-Delay of 40 days-Condoned-Affidavit of Chartered Accountant-Section 254(3) of Act and Rule 35 of 1963 Rules mandate Tribunal to ensure service of order upon assessee. Service upon an authorised representative not substitute for service upon the assessee [S. 254 (3), 260A, Civil Procedure Code, 1908, Ο. 5, r. 12 Income-tax Act, 1961, 282 Income-tax (Appellate Tribunal) Rules, 1963, r. 35 Information Technology Act, 2000, Chapter IV.]