MIL-A-23899B (NOTICE-1), MILITARY SPECIFICATION: AURAL PROTECTOR, SOUND (30-AUG-1999) [S/S BY S/S by SAE-AS23899]

MIL-A-23899B (NOTICE-1), MILITARY SPECIFICATION: AURAL PROTECTOR, SOUND (30-AUG-1999) [S/S BY S/S by SAE-AS23899]., MIL-A-23899B, dated 17 August 1984, is hereby canceled. Future acquisition for this item should refer to SAE-AS23899, �Aural Protector, Sound.�