MIL-STD-1787A AIRCRAFT DISPLAY SYMBOLOGY
This standard, adopted 10 December 1984, describes symbols, symbol formats, and information content for electro-optical displays that provide aircrew members with information for takeoff, navigation, terrain following/terrain avoidance, weapon delivery, and landing. It describes symbol geometry, font, recommended dimensions, and mechanizations. This standard does not describe symbols for electronic warfare displays which are normally classified in meaning. It does not describe the dynamic relationships between symbols and aircraft system states. Nor does it describe qualities (other than those mentioned above) that affect legibility, such as resolution, brightness, uniformity, contrast, flicker, noise, minimum line movement, color, and the like. This standard applies only to displays used on Air Force fixed-wing aircraft.
