S. 254(2) : Appellate Tribunal-Rectification of mistake apparent from the record–Duties-Dismissal of the appeal for non prosecution has resulted in failure of justice–Order requires to be rectified – Delay of 497 days in filing the miscellaneous application was condoned, though the Tribunal has no power to condone the delay beyond six months–Cost of Rs. 5000 is imposed on the assessee. [S.254(1) Art, 226, 227]