· ACP - audio control panel
· DEU - display electronic unit
· DFCS - digital flight control system
· DME - distance measurement equipment
· EFIS - electronic flight instrument system
· FCC - flight control computer
· FDAU - flight data acquisition unit
· FMC - flight management computer
· HSI - horizontal situation indicator
· ILS - instrument landing system
· LCD - liquid crystal display
· MCP - mode control panel
· NAV - navigation
· NCD - no computed data
· PWR - power
· RDMI - radio direction magnetic indicator
· REU - remote electronic unit
· RF - radio frequency
· RMI - radio magnetic indicator
· VOR - VHF omnidirectional ranging.