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This Aerospace Recommended Practice (ARP) is intended to specify the environmental conditions necessary to permit the operating crew of large civil transport aircraft to perform their required duties and functions in comfort, with minimum fatigue and no distraction. Environmental conditions should cause no short or long-term effects deleterious to health or physical well being, nor significantly impair ability to perform normal flight deck crew functions.

The information contained in this document is based on line experience with current systems. It should be used as a basis for ongoing research and development including the human factors aspects of future flight management systems and their interaction with the ATC environment.

This anex recommends additional design objectives applicable when control laws or control characteristics are modified for the purpose of Flight Envelope Awareness/Protection. While only manually controlled flight is addressed, it is assumed that Autoflfight, Autothrottle, or Autothrust performance is compatible.

This document specifies the requirements for the design objectives for handling qualities applicable to transport aircraft operating in the subsonic, transonic, and supersonic speed range. These objectives are not necessarily applicable to rotor or VTOL aircraft.

This document recommends criteria for a system designed to manage and communicate information via data link to support flight operations.

This document recommends criteria for Airborne Windshear Systems, including operational objectives, characteristics and functional requirements. The recommendations of the document apply to transport aircraft, and describe the operational objectives of windshear alerting systems, situational displays, guidance systems and avoidance/detection systems.

This document specifies requirements for an Airborne Landing Guidance System (ALGS) electronic device. This equipment shall derive relative aircraft position and situation information for flight along precision three-dimensional paths within the appropriate coverage area. The precision three-dimensional path may be an ILS straight-in look-alike path or a complex, curved path. The requirements are applicable to electronic devices capable of receiving signals or other information from one or more sources, including but not limited to ILS, MLS, GNSS, or IRU inputs.

This document recommends criteria and requirements for a Final Approach Spacing System (FASS) for transport aircraft. This is an Aerospace Recommended Practice to support the development of a Final Approach Spacing System (FASS) for Approach Spacing for Instrument Approaches (ASIA) operations.

This document recommends criteria for the design and installation of flight crew rest facilities (FCRF) on transport category aircraft when operations with an augmented flight crew are performed. NOTE: Within this ARP, the term “must” will indicate items required for compliance with outside known government regulations, especially 14 CFR Part 117. “Shall” describes sections which are required if this ARP is used as a means of compliance. The term “should” will indicate optional requirements, preferences, and recommendations of the approving SAE committee. Wherever noted and bracketed as [FAA] or [EASA], this document includes agency regulations for reference that are not otherwise evaluated herein.

This document establishes the minimum requirements for seats and restraint systems for the flight deck. Due to limitations that it would place upon basic aircraft design, it is not considered practical for these requirements to apply fully to the observer seat. However, it is emphasized that every effort should be made to provide the observer seat position with an equivalent level of comfort and safety. This document is also intended to make recommendations for flight crew restraint systems. A properly designed crew restraint system will mminimize injury or debilitation during a survivable crash and enable post crash assistance to occupants and escape from the aircraft. Crew member safety is the primary objective, with appropriate provisions for crew comfort taken into consideration. The criteria established herein are designed to standardize restraint systems without hindering the development of new, improved systems.