SAE Standards Works
A-4 EFIS Working Group
AS6296 - Electronic Flight Instrument System (EFIS) Displays
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Electronic Flight Instrument System (EFIS) Displays
This SAE Aerospace Standard (AS) specifies minimum performance standards for Electronic Flight Information System (EFIS) Displays that are intended for use in the flight deck by the flightcrew in all 14 CFR Part 23, 25, 27, and 29 aircraft. The requirements and recommendations in this document are intended to apply to, but are not limited to, the following types of display functions: • Primary Flight and Primary Navigation which include vertical situation, horizontal situation, and moving map displays. • Systems display and displays that have alerting functions which may include engine instrument, aircraft systems information/control, pilot or flightcrew alerting, and documentation displays. • Control Displays including communication, navigation and system control displays. • Information Displays which may include navigation displays used for situation awareness only, supplemental data displays, and maintenance displays. • Display Unit (DU) providing the visual display of SG symbology. This document will address control functions when: • Such control function is related to the data presented on the EFIS display(s), or • The control means are integrated into the displays. Synthetic Vision standards are not included in this document. This document is not intended to address the display of single function equipment (e.g. airspeed). Applicants manufacturing single function equipment should continue to use the TSOs specific for their equipment. This document is not intended to address the sensors or computational engines which transmit their data to the EFIS for display. NOTE: This document is expected to be used by the FAA as the basic requirement for a Technical Standard Order (TSO) for EFIS Displays. This document is not intended to address the hardware, physical, or optical requirements of the EFIS displays. These requirements are addressed in AS-8034B. This document is subject to change to keep pace
Historically, FAA Technical Standard Orders (TSO) and associated industry Minimum Operational Performance Specifications (MOPS) were developed to address sensor and indicator requirements for single functions, such as airspeed, altitude, or fuel flow. In contrast, modern Electronic Flight Instrument System (EFIS) displays normally present indications for multiple functions, but do not normally include the sensor. Presently, the FAA does not have a single TSO and MOPS that addresses the operational/functional requirements for EFIS displays. Requirements for EFIS displays typically consist of a few requirements for each function, drawn from many TSOs and associated MOPS. As a result, TSO applications for EFIS displays have multiple exceptions to many TSOs and may include incomplete TSO authorizations. This document is intended to facilitate EFIS TSO authorizations by addressing only the EFIS display requirements for a broad set of aircraft functions. This document provides criteria for EFIS displays that are intended for use in the flight deck by the flightcrew in all 14 CFR Part 23, 25, 27, and 29 aircraft.