Before revision: As all information from the sensors is transmitted electrically, routing of pitot and static pressure lines through the aircraft and associated maintenance tasks can be avoided.Embraer 195 Airplane Operations Manual, Volume 2, chapter 14 In simpler aircraft including helicopters the Air Data Computers, generally two in number, and smaller, lighter and simpler than an ADIRU, may be called Air Data Units, although their internal computational power is still significant.
After revision: As all information from the sensors is transmitted electrically, routing of pitot and static pressure lines through the aircraft and associated maintenance tasks can be avoided.Embraer 195 Airplane Operations Manual, Volume 2, chapter 14 In simpler aircraft and helicopters the Air Data Computers, generally two in number, and smaller, lighter and simpler than an ADIRU, may be called Air Data Units, although their internal computational power is still significant.