Initiating Officer, in instant writ petition, challenged order of Appellate Tribunal on ground that no appeal could have been filed before Appellate Tribunal against show-cause notice issued by Adjudicating Authority under section 26(1) . High Court held that  since appeal to an Appellate Tribunal lies only from ‘an order of Adjudicating Authority’ under section 26(3) and said show-cause notice does not-constitute ‘an order’, jurisdiction of Appellate Tribunal to entertain challenge to said show-cause notice was to be held in doubt .