EFD-5.5 -
Electronic Flight Display 5.5
An avionics instrument used as navigation display of Hercules C-130 with 3 modes: Attitude Direction Indicator (ADI), Horizontal Situation Indicator (HSI), and Radar Display Unit (RDU).
EFD-6.0 -
Electronic Flight Display 6.0
An avionics instrument used as navigation display of Boeing 737-200 and Hercules C-130 aircraft with two display modes: Electronic Attitude Direction Indicator (EADI) and Electronic Horizontal Situation Indicator (EHSI).
DDSC -
Digital Data to Synchro Converter
An avionics instrument of Boeing 737-200 used for converting digital data (ARINC-429 interface) to analog data.