MS21961 (NOTICE 2), MILITARY SPECIFICATION: PANEL RELAY, PILOT, ENCLOSED, AIRPORT LIGHTING (TYPES I AND II) (28 sep 1995) [NO SUPERSEDING DOCUMENT]
MS21961 (NOTICE 2), MILITARY SPECIFICATION: PANEL RELAY, PILOT, ENCLOSED, AIRPORT LIGHTING (TYPES I AND II) (28 SEP 1995) [NO SUPERSEDING DOCUMENT].