TM 1-1510-218-10 3-53 CAUTION The  KLN  90B  does  not  take  into  account the geometry of the active flight plan when determining  the  arc  intercept  point.    This point is defined solely on the present radial and   the   defined   arc   distance   from   the reference VOR.  For this reason, it is better to delay selecting approaches that contain DME  arcs  until  the  aircraft  is  closer  to  the destination. NOTE If   the   present   radial   from   the   reference VOR is outside of the defined arc, the KLN 90B will default to the beginning of the arc. (3)   The  KLN  90B  recognizes  if  this  point  is associated with a DME arc.  Once the arc waypoint is chosen, the KLN 90B determines on what radial of the reference  VOR  is  presently  located.    A  waypoint  is created    that    is    located    at    the    intersection    of    the present radial and the DME arc.  This waypoint is the first waypoint in the list of waypoints presented on the APT 8 page before loading the approach into the flight plan.  This waypoint is named in the same convention as above. (4)   With the cursor over LOAD IN FPL, press the  ENT button.  The approach will be loaded into the active flight plan. (5)   After the approach is loaded into the flight plan, the KLN 90B may give the message, "REDUNDANT   WPTS   IN   FPL   -   EDIT   EN   ROUTE WPTS AS NECESSARY." Examine the flight plan and, if practical, observe the Super NAV 5 page to make sure that the sequence of waypoints does not have any unnecessary legs in it. (6)   The  KLN  90B  will  now  provide  guidance to  the  arc  intercept  point.    The  Super  NAV  5  page displays the entire arc on the screen.  Refer to Figure 3-70.    The  portion  between  the  beginning  of  the  arc and the arc intercept is drawn with a dashed line.  The part that is between the arc intercept point and the end of the arc is drawn with the normal solid line. Figure 3-70.  DME ARC (7)   In  some  cases,  ATC  may  provide  radar vectors to the arc.  The KLN 90B provides a means to define a new intercept point based on the current track of the aircraft over the ground.  This can be done from either the Super NAV 5 page or from the FPL 0 page.   The dashed line on the Super NAV 5 page will help in determining if the ATC vectors are correct. 1.   From  the  Super  NAV  5  page,  pull  out the  right  inner  knob  to  bring  up  the waypoint-scanning window. 2.   Turn the right inner knob until the first waypoint  of  the  arc  is  displayed.   For approaches,    this    will    have    an    "i" appended  to  the  waypoint  name.    If the  recalculation  is  to  be  done  from the FPL 0 page, turn on the left cursor and  move  if  over  the  first waypoint of the arc. 3.   From    either    page    press    the    clear button.  This will change the waypoint to read MOVE?.  Refer to Figure 3-71.   If  it  is  desired  to  re-compute  the  arc intercept point, press the  ENT button.   If   a   new   arc   intercept   point   is   not desired, press the clear button again. 3.0 NM D011L-i ARM-LEG 142 KT .11NM DTK191^o ARC011^o 5 D011L MOVE ? Figure 3-71.  DME ARC MOVE?