DREC-2004A is the long hour and the multi-channel recording and playback equipment for Air Traffic Control voice communications, and helps the later analysis of Air Traffic Accident.

DREC-2004A is a dual redundant configuration to allow the continuous recording by adapting the stand-by recording deck to record the voice communications in case of master recording deck failure.

DREC-2004A continuously stores voice communications up to 1 month, which are down-loadable to data cartridge for storage by 24-hour (One day) basis.