Document ID: chunk:federal_register_of_legislation:F2018C00889:reg:22:p20
Version: federal_register_of_legislation:F2018C00889
Segment Type: reg
Provision Reference: reg 22 (pt 20/26)
Character Range: 220510–223321

or off, and applicable lateral and vertical modes), minimum demonstrated L/NAV accuracy, and sensor limitations, if any;
(b) any conditions or constraints on path steering performance (e.g. A/P engaged, FD with map display, including lateral and vertical modes, and/or CDI/map scaling requirements) should be identified. Use of manual control with CDI only, is not allowed on FRT;
(c) the criteria used for the demonstration of the system, acceptable normal and non-normal configurations and procedures, the demonstrated configurations and any constraints or limitations necessary for safe operation should be identified.

5 FRT system performance
       To meet the requirements of clause 4 of this Appendix, an eligible aircraft's FRT system must meet the following performance standards:
(a) the performance requirements set out in any of the documents listed in clause 4.2 of this Appendix;
(b) a demonstration to CASA that the navigation system has the capability to execute leg transitions and maintain track consistent with an FRT at each waypoint. The lateral Total System Error must be within ±1 × RNP of the path defined by the published procedures for at least 95% of the total flight time for each phase of flight and each autopilot and/or flight director mode requested.

6 FRT system functionality
       To meet the requirements of clause 4 of this Appendix, an eligible aircraft's FRT system must have the following functionality:
(a) the system must have the capability to execute a flight path transition and maintain a track consistent with a fixed radius between 2 route segments. The lateral TSE must be within ±1 × RNP of the path defined by the published procedure for at least 95% of the total flight time for each phase of flight and any manual, autopilot and/or flight director mode. For path transitions where the next route segment requires a different TSE and the path transition required is an FRT, the navigation system may retain the navigation accuracy value for the previous route segment throughout the entire FRT segment. For example, when a transition occurs from a route segment requiring an accuracy value of 2.0 to a route segment requiring an accuracy value of 1.0, the navigation system may use an accuracy value of 2.0 throughout the FRT;
(b) the system must have an electronic map display depicting the RNP computed path of the selected route with pilot selectable range and a numerical indication of the cross-track error value;
(c) the system must be able to define transitions between flight path segments using a 3-digit numeric value for the radius of turn (to 1 decimal place) in nautical miles e.g. 15.0, 22.5. The navigation database will specify the radius associated with a particular waypoint along an airway.

7 Operating standards
       7.1The standards