An Electronic Flight Instrument System (EFIS) is a cockpit instrument display system located in the flight cockpit, on the lower deck, after the windshield. It is electronically powered and produces a digital output. The electronic display unit system consists of 3 different display units, Primary Flight Display (PFD), Navigation Display (ND) and EICAS/ECAM depending on the engine manufacturer. There is one PFD and one ND each for the co-pilot and captain. However, the EICAS/ECAM are shared between the two crews. EIFS facilities vary considerably. A light aircraft may be fitted with a single display unit, showing flight and navigation data, while a wide-body aircraft is likely to have six or more display units. Say no to plagiarism. Get Tailored Essay on “Why Violent Video Games Should Not Be Banned”?Get the Original EssayTypical Display of Electronic Flight Instrument System (EFIS) Purpose of Electronic Flight Instrument System (EFIS)Purpose of An electronic flight instrument system (EFIS) in an aircraft consists of displaying output flight data on a CRT or LCD display to monitor the flight progress of the aircraft and the proper operation of all parts and aircraft systems. As well as displaying essential information to help the flight crew operate the aircraft safely and efficiently. EFIS units assist the pilot in controlling the aircraft and making decisions during flight to the intended destination, by providing flight information and navigation information on flight performance. Block diagram of the Electronic Flight Instrument System (EFIS) Operations and functions of each unit of the EFIS Air Data Inertial Reference Unit The Inertial Reference Unit is connected to aircraft sensors all around the aircraft to produce flight and aerial data. The sensors include a static Pitot tube and a ring laser gyroscope. The whole system can be divided into 2 units, the aerodynamic data unit and the inertial reference unit. In the air data unit, pitot static tubes are used with air data modules to convert atmospheric pressure into electrical signal amplitudes to the inertial reference unit via data buses. With the calculation of speed, Mach number, temperature and barometric pressure altitude. The Air Data Inertial reference center then compiles the information and processes it to send it to the next phase to display the result. Navigation Data Navigation data is a common block of data that provides navigation information to guide the aircraft to reach the intended destination safely and efficiently via available or decided routes and communications. Data extracted from different sensors and instruments around the aircraft. Such as weather radars, transponders, etc. Navigation data includes weather data, instrument landing system data, flight path data, road collision warning system data, etc. Which helps the plane navigate properly. EFIS Control Panel The EFIS Control Panel allows manual control to be given to the pilot to select settings and control displays by choosing what information to display on the CRT or LCD screens. They provide pilots with screen controls such as brightness, range and mode settings in maps, as well as preferred data display and data entry. Primary Flight Display (PFD)