of the notice of demand relating to the assessment or date of service of the order. But, the appellate authority has powers to admit the appeal presented after the expiry of the said period, if sufficient cause is shown as to why the appeal could not be presented within the period stipulated. But, no appeal shall be admitted, after a period of six months from the date of service of the demand notice or service of the order. Admittedly, the petitioner did not file the appeal against the assessment order within the time stipulated. That being so, I do not think that the petitioner can, at this point of time, challenge the assessment order and demand notice. Without challenging the same appropriately, insofar as what is raised is a question of fact, I am not inclined to entertain this writ petition, in view of the decision of the Division Bench in Assistant Commissioner of Central Excise v. Krishna Poduval [2005(4) KLT 947].