Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 34 NAVIGATION The subsystem components that provide aircraft navigational information. Includes Very High Frequency Omnidirectional and Radio Range (VOR), pitot, static, Instrument Landing System (ILS), flight director, compasses, indicators, etc. 00 GENERAL 10 FLIGHT ENVIRONMENT DATA The portion of the system that senses environmental conditions and uses the data to influence navigation.
Includes central air data computer, pitot static, air temperature, rate-of-climb, airspeed, high speed warning, altitude, altitude reporting, altimeter correction system, air disturbance detection system, etc. 20 ATTITUDE AND DIRECTION The portion of the system that uses magnetic, gyroscopic and inertia forces to sense and display the direction or attitude of the aircraft. Includes gyro horizons, directional gyros, magnetic compasses and magnetic heading systems, turn and bank, amplifiers, servos, flight director, etc. Includes flight director when not integral with the autopilot computation.
30 LANDING AND TAXING AIDS The portion of the system that provides guidance during approach, landing, and taxiing. Includes localizer, glide slope, ILS, markers, paravisual director ground guidance systems, etc. 40 INDEPENDENT POSITION DETERMINING The portion of the system that provides information to determine position and is mainly independent of ground installations or earth satellite systems. Includes inertial guidance systems, weather radar, Doppler, proximity warning, collision avoidance, star tracker, sextant/octant, etc.
50 DEPENDENT POSITION DETERMINING The portion of the system that provides information to determine position and is mainly dependent on ground installations or earth satellite systems. Includes distance measurement equipment, transponders, radio compass, Long Range Navigation (LORAN), VOR, Automatic Direction Finder (ADF), Tactical Air Navigation (TACAN), Global Positioning System (GPS), etc. 60 FLIGHT MANAGEMENT COMPUTING The portion of the system that combines navigational information to compute or manage the aircraft's geographical location or theoretical flight path.
Includes course computers, flight management computers, performance data computers and associated control/display units, warning annunciators, etc. 43