MIL-I-6052B, MILITARY SPECIFICATION: INTERCOMMUNICATION SETS, AN/AIC-4 and AN/AIC-4A (16-DEC-1952) CANCELLED W/ NO SUPERSEDING DOCUMENT]

MIL-I-6052B, MILITARY SPECIFICATION: INTERCOMMUNICATION SETS, AN/AIC-4 and AN/AIC-4A (16-DEC-1952) CANCELLED W/ NO SUPERSEDING DOCUMENT]., The equipment covered by this specification shall be designed to provide the pilot and radio operator with selective control of electronic equipments aboard an aircraft and to provide selective interphone communications and some radio facilities for crew members.