Description / Abstract: DO-257A supports the electronic depiction of airport surface situation awareness (SA) maps and vertical situation awareness displays. The revision includes requirements and guidelines for the electronic depiction of airport surface diagrams, ownship, ground path and vertical profile aspects of the display and associated controls. Two new Sections were added: Section 2.3 - Aerodrome Moving Map Display (AMMD) and Section 2.4 - Vertical Situation Awareness Displays (VSAD). Consensus was reached on hazard classifications by removing the Major hazard classification for airborne display from the document. It is understood that a FAA Technical Standard Order referencing DO-257A will further address hazard classifications.