The GNC 300’s route catalog page is used to create, edit, delete or copy routes, andserves as the main page for a host of functions. These include route activation, determiningthe closest point of approach and search and rescue operations. It also displays a summary ofroutes currently stored in memory, with the departure and arrival route waypoints and totaldistance for the selected route. To scroll through the available routes, rotate K. A one-lineuser comment may be added to any storage route and displayed on the route catalog page.To add user comments to any route (except route 0):1. Rotate K to display the route to which you would like to add a comment.2. Press C twice and use O to highlight the bottom row.3. Use K and O to enter comments, and press E. To erase, press \, then E.The route action field, located at the top right of the page, is used to select the desiredroute operation. The following functions are available:• Activate - activate the route for navigation• Reverse - activate a route in reverse order• Edit - create a new route, or edit an existing route• Approach - select an approach for the route (see Section 6)• Star - select a STAR for the route (see Section 6)• Sid - select a SID for the route (see Section 6)• Delete - delete a route• Copy - copy the current route to an empty route• CPA - calculate the closest point of approach• Search - Perform search and rescue ladder operations62APPENDIX AMagnetic Variation&Arrival AlarmSECTION5 ROUTESRoute Catalog Page21453Route Catalog Page1. Route selection field2. Route action field3. Departure/Arrival waypoints4. Cumulative distance of route5. Comments/Parallel track offset field