TM 1-1510-218-10 3-17 2.   Press  the        D        button.    The  Direct  To page  is  displayed  on  the  left,  containing the active waypoint identifier. 3.   Press the ENT button. NOTE If the KLN 90B is in the approach mode and this method is used to center the deviation bar when the missed approach point is the active  waypoint,  then  the  approach mode will be canceled and the unit will revert to the     approach     arm     mode.          A     missed approach will have to be executed. o.    Proceeding  Direct  To  Another  Waypoint.   Proceed   direct   to   another   waypoint   other   than   the active waypoint, by using Direct To procedure 1 or 2 at any time. p.    Canceling    Direct    To    Operation.        The primary    reason    for    wanting    to    cancel    direct    to operation   is   to   return   to   flight   plan   operation.      To cancel direct to operation: 1.   Press the    D     button. 2.   Press the CLR button. 3.   Press the ENT button. q.    Waypoint Alerting For Direct To Operation.        Approximately    36    seconds    prior    to reaching a direct to waypoint, the arrow preceding the waypoint identifier on the waypoint page for the active waypoint  will  begin  flashing.    This  arrow  will  also  be flashing  on  any  navigation  page  or  any  distance/time page displaying the active waypoint identifier.  On the super  NAV  5  page,  the  entire  waypoint  identifier  will start  to  flash.    This  is  called  waypoint  alerting.    The external waypoint annunciator will begin flashing at the same time. r. Navigation  Pages.     The  KLN  90B  has  five navigation   pages.      Unlike   any   other   pages,   these pages  may  be  selected  and  viewed  on  both  the  left and right sides of the screen. (1)   NAV  1  Page.    The  NAV  1  page,  Figure 3-10, displays the following information. (a)  The Active Navigation Leg.  For direct to   operation,   this   consists   of   the   direct   to   symbol, D    ,  followed  by  the  active   DIRECT   TO  waypoint identifier.    For  the  leg  of  a  flight  plan,  this  consists  of the   FROM    waypoint    identifier    and    the    active    TO waypoint identifier.  An arrow (® ) precedes the active waypoint identifier. KHPN  KOSH DIS   683NM GS    193KT ETE    3:34 BRG    303^o +    +    +    +    +        +    +    +    +    + NAV 1 Figure 3-10.  NAV 1 Page (Flight Plan Operation) (b)  A   Course   Deviation   Indicator   (CDI) that  displays  left  and  right  deviation  from  the  desired track.  A vertical bar operates like a navigation needle on  a  conventional  CDI  or  HSI.    Each  dot  represents one   nautical   mile   deviation   from   the   desired   track, 5 nm  full  scale  deflection.    The  center  triangle  also serves  as  the  CDI's  TO  /  FROM  indicator.    The  word FLAG  is  displayed  over  the  CDI  when  the KLN 90B is not usable for navigation. NOTE It is possible to change the CDI scale factor to  be  0.2  NM  per  dot,  1  nautical  mile  full- scale deflection, or 0.06 nm per dot, 0.3 nm full scale defection. (c)  The  Super  NAV  1  Page.    When  the NAV 1 page is selected on both the left and right sides at the same time, the Super NAV 1 page is displayed.   The  Super  NAV  1  page  contains  exactly  the  same information  as  the  standard  NAV  1  page  but  spreads the  data  across  the  entire  screen  making  it  easier  to view. (2)   NAV 2 Page.    The  NAV  2  page  displays the aircraft's present position in two formats.  The first format  is  in  terms  of  the  distance  and  radial  from  a nearby  VOR.    The  second  format  is  in  latitude  and longitude. (3)   NAV 3 Page.  Refer to Figure 3-11. (a)  Desired    Track    (DTK).       The    great circle course between two waypoints.  Any CDI or HSI driven by the KLN 90B, including the CDI displayed on the NAV 1 page, is referenced to this desired track.