The approach transition (if any) is automatically strung and the display switches from ARRIVAL 1 page to the ARRIVAL 2 page for enroute transition selection (if any).
Once the ARRIVAL 2 page is called back for enroute transition selection, it shows the list of TRANS's compatible with the STAR (including the NO TRANS option). The active transition remains selected if it is compatible with the newly selected STAR. The pilot then selects the desired transition and the whole selection is completed. If the pilot desires to select a new enroute transition only, he accesses the ARRIVAL 2 page by NEXT PAGE on ARRIVAL 1 page and performs the last paragraph above. If the pilot desires to select a new STAR he accesses the ARRIVAL 2 page and performs selection. If the pilot desires to select a new APPR VIA, he accesses the APPROACH VIAS page through the corresponding key on the ARRIVAL 2 page and selects the desired APPR VIA. INSERT and ERASE prompts are available as soon as one element is selected or modified. Before it a RETURN prompt allows the access of the previous level page. STAR and TRANS compatibility checking is based solely on a match of the active procedure identifier in the new list of identifiers. APPR VIA compatibility checking is as described previously. That is, if an identifier (or NO VIA) is the same as the active selection, the pilot must still select the APPR VIA. In this case, the current active identifier is green with a selection arrow.
(5) Next waypoint (Ref. Fig. 043) It allows to enter a new waypoint, just after the revised waypoint. The following rules apply:
R - The NEXT WPT function is available at any revised point except: . PPOS or FROM waypoint (except at origin in Preflight), . Manual termination of VM or FM leg.
-The next waypoint must be a fixed waypoint but it cannot be a runway.
-If the entered waypoint is a LAT/LONG or is not in the Data Base nor in the stored waypoints file, the New waypoint page is automatically displayed.
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The name of the next waypoint can be followed by a delta symbol (OVFY key). In that case, the waypoint has to be overflown.
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The next waypoint is inserted following the revised point with a direct leg. If the revised point is DISCON, the next waypoint is strung as an IF leg following the DISCON.
-If the new waypoint is identical (only for IDENT) to an existing downpath waypoint in the flight plan then all legs between the revised waypoint and that identical downpath waypoint are deleted. Any current constraints and pilot entered winds of that downpath waypoint are retained. Otherwise, a discontinuity follows the new waypoint. The exception to this rule occurs when the revised point is contained in the primary or alternate route legs and the new waypoint is identical to a waypoint in the corresponding primary or alternate missed approach legs. In this case, no legs are deleted and a discontinuity is inserted between the new waypoint and the next fixed waypoint termination in the primary or alternate route legs. Another exception concerns LAT/LONG waypoints which may have the same ident but not the same position. In this case, Lat/Long waypoints are considered to be identical for comparison purposes if they have nearly identical positions (i.e. the differences between the latitudes and longitudes of the two waypoints are both less than or equal to 0.05 min.).
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