Exemption amendment adds National Aeronautical Laboratory to central excise miscellaneous exemptions under rule-based notification. Amendment to Notification No. 184/86-C.E. adds a new Serial No. 5 in the Annexure, specifying National Aeronautical Laboratory as an exempted entity under the miscellaneous exemptions created pursuant to sub-rule (1) of rule 8 of the Central Excise Rules, 1944.