Version 2.0 23Navigate Operator’s ManualFrom time to time, you might drift off course and decide not to return toyour original course line. If you drift outside of your cross-track errorlimit, you can reset your course line from your present position to thewaypoint by pressing the E key and selecting Reset XTE from thedisplay. This will save your autopilot from having to work hard to getyou back on course. Press the E key again to get back into normaldisplay mode.In addition, if you decide you want to skip this waypoint, and go on tothe next one, Press the E key, and the Skip Waypoint softkey one time.Press the E key to end this procedure. If you skip one waypoint manu-ally, and the CDU starts skipping more waypoints by itself, you prob-ably need to change your Waypoint Pass Criteria in the CFG1 Navi-gate menu. Refer to the Route section of this manual for more detailsabout skipping waypoints.Just as in NAV1, you will see an RL or GC symbol in the upper rightcorner of the display indicating whether you are navigating underRhumb Line or Great Circle. This is set in the CFG1 Navigate menu.NAV 3 - Expanded Navigation InformationNavigate screen 3 has four windows. The upper left window is asmaller version of NAV2. Please read the previous section for a de-tailed description of this window. The two windows below this oneindicate the current date, time and the ETA to the end of your route forthe time zone currently entered. The date and time format is set in theCFG1 Time menu. The ETA and TTG (in the right hand window) arefiltered over time, so allow the filtering to settle when you first make acourse or speed change. The filter time is controlled in the RTE1 ETASetup screen. The Time-To-Go (TTG) value on the bottom of the righthand window expands from HH:MM:SS to HHHH:MM:SS when thetime to go is greater than 99:59:59. Also, these values are calculated byusing your Waypoint Closure Velocity (WCV), not your SOG. WCV isdescribed in short detail in the NAV4 section which follows.
