MIL-T-27535A (NOTICE 3), MILITARY SPECIFICATION SHEET, TRANSFORMER, POWER, ISOLATION, SERIES CIRCUIT, AIRPORT LIGHTING, GENERAL SPECIFICATION FOR (31 MAR 1999)., This notice should be filed in front of MIL-T-27535A, dated 15 May 1964. MIL-T-27535A is inactive for new design and is no longer used, except for replacement purposes.