Appendix B. Definitions.
B-1. Acronyms.
AC Advisory Circular ACO Aircraft Certification Office AMC Acceptable Means of Compliance ARAC Aviation Rulemaking Advisory Committee DOT Department of Transportation EASA European Aviation Safety Agency FAA Federal Aviation Administration FADEC Full Authority Digital Engine Controls FMS Flight Management System ICAO International Civil Aviation Organization ISO International Standards Organization MOC Means of Compliance SAE SAE International STC Supplemental Type Certificate TAWS Terrain Awareness Warning System TC Type Certificate TCAS Traffic Alert and Collision Avoidance System TSO Technical Standards Order VOR Very High Frequency Omnidirectional Range B-2. Terms and Definitions.
(a) Aircraft Interface - an electronics unit that provides the electrical connections between the display in the cockpit and the aircraft controls
(b) Annunciators Indications – Separate alerting instruments that get the attention of the operators when they are diverted from the primary display.
(c) Conformity – Official verification that the flightdeck/system/product conforms to the type design data.
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(d) Consistency – Presentation of similar information in multiple locations or modes in the same way to minimize flightcrew error.
(e) Control Device (Flightdeck Control) – Devices the flightcrew manipulates in order to operate, configure, and manage the airplane and its flight control surfaces, systems, and other equipment.
(f) Cursor Control Device – Control device for interacting with virtual controls, typically used with a graphical user interface on an electro-optical display.
(g) Design Philosophy – A high-level description of human-centered design principles that guide the designer and aid in ensuring that a consistent, coherent user interface is presented to the flightcrew.
(h) Display – Device (typically visual, but may be auditory or tactile) that transmits data or information from the airplane systems to the flightcrew.
(i) Flightcrew – Group of trained and checked professional persons who’s assigned task is to operate the airplane safely as set forth in § 25.1523 and in appendix D to part 25.
(j) Interface - The layout of an application's graphic or textual controls in conjunction with the way the application responds to user activity, or an electrical circuit linking one device, especially a computer, with another.
(k) Multifunction Control – A control device that can be used for multiple functions as opposed to a control device with a single dedicated function.
(l) Task Analysis – A formal analytical method used to describe the nature and relationship of tasks involving a human operator.
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