TM 1-1510-225-10 3D-64 The  TRI  2  page  displays  the  minimum En route Safe   Altitude   (ESA)   and   any   areas   of   special   use airspace that are between the present position and the selected waypoint.  Refer to Figure 3D-91. TRI+2 P.POS-KSTL ESA  4700FT AUSTIN CL C HOG HIGH SOUTH MOA Figure 3D-91.  TRI 2 Page NOTE Prior to using the TRI 1 and 2 pages while the KLN 90B is in the take home mode, use the    SET    1    page    to    enter    the    present position. (1)   Trip Planning on the TRI 1 and 2 Pages. 1.     Use  the  left  outer  knob  to  select  the TRI type pages. 2.     Rotate  the  left  inner  knob  to  select the TRI 1 page. 3.     Press the left  CRSR button to turn on the  left  cursor  function.    The  cursor will  be  over  the  waypoint  identifier  at the top of the page. 4.     Use the left inner and outer knobs to enter   the   identifier   of   the   selected waypoint. 5.     Press   the   ENT   button   to   view   the waypoint page for the selected waypoint on the right side. 6.     Press     the     ENT     button     again     to acknowledge the waypoint page.  The distance, bearing, and estimated time en route are now displayed. If    true    airspeed    and    wind    information    were entered on the TRI 0 page, the groundspeed displayed is  a  result  of  those  inputs  applied  to  the  direction  of flight    specified    on    the    TRI    1    page.        A    different groundspeed  may  be  entered  by  using  the  left  outer knob   to   position   the   cursor   over   each   digit   of   the groundspeed  and  using  the  left  inner  knob  to  select each individual digit. 7.     Calculate    an    estimate    of    the    fuel required    to    the    selected    waypoint.   Turn the left outer knob to position the cursor  over  the  appropriate  first  digit adjacent to the Fuel Flow (FF). 8.     Use the left inner and outer knobs as before  to  enter  the  aircraft’s    rate  of fuel  flow.    The  unit  (gallons,  pounds, etc.)  is  not  important  as  long  as  all entries are in the same unit. 9.     Use the left inner and outer knobs to enter    the    amount    of    reserve    fuel (RES)    desired    upon    arrival    at    the destination  waypoint.    The  estimated amount of fuel required (F REQ) to fly to    the    selected    waypoint    with    the specified   reserve   is   now   displayed.   Entering the fuel flow and reserve fuel on   the   TRI   1   page   also   inputs   this same  information  on  the  TRI  3  and  5 pages. 10.   Press the left  CRSR button  to turn off the left cursor function. 11.   Select the TRI 2 page.  The minimum ESA  and  a  listing  of  areas  of  special use    airspace    along    the    route    are displayed.    If  all  the  areas  of  special use  airspace  won’t  fit  on  one  page, there   will   be   multiple   TRI   2   pages indicated   by   TRI+2,   as   illustrated   in Figure 3D-91. c.   The Trip Planning 3 and 4 Pages. The TRI 3  and  4  pages  allow  trip  planning  between  any  two waypoints.      The   KLN   90B   does   not   have   to   be receiving GPS signals to use these pages. 1.   Select the TRI 3 page on the left side. 2.   Press the left  CRSR button to turn on the left   cursor   function.      The   cursor   will   be located over the From waypoint. 3.   Use the left inner and outer knobs to enter the identifier of the From waypoint. 4.   Press the ENT button to view the waypoint page on the right side for the waypoint just entered.