TM  55-1510-221-10 8. 9. 10. 11. FROM-TO display indicates “8.8“. The  following  pushbuttons  and lights  illuminate:  ROLL  LIM, HOLD, INSERT/ADVANCE, WYPT   CHG,   ALERT,   BAT   (on C D U    a n d MSU), WARN, READY  NAV  and  WYPT  on pilot’s  HSI. AUTO-MAN TEST switch (CDU)   -   Release.   Confirm   data displays   indicate   coordinates   in computer  memory. If  UTM  coordinates  are  to  be used,   verify   that   appropriate   grid coefficients  have  been  loaded. (2.)   Insert   present   position: NOTE Prior   to   pressing   INSERT/ADVANCE pushbutton,   any   incorrectly   loaded   data can  be  corrected  by  pressing  the  CLEAR pushbutton   and   reloading   correct   data. NOTE While  parked  aircraft  is  undergoing  align- ment,   encoding   altimeter   will   supply   the field   elevation   (aircraft   pressure   altitude) into  INS. NOTE Once   present   position   has   been   inserted and  computer  has  advanced  to  alignment state  “7“,  present  position  cannot  be  rein- serted  without  downmoding  to  STBY  and restarting   alignment. NOTE If   longitude   and   latitude   coordinates   are being  used,  skip  following  step  (a)  -2-  and proceed  with  step  (b)  -2-. (a.)   Insert   UTM   coordinates   of   air- craft  present  position: 1. Data  selector  -  UTM  POS. Observe   that   prior   to   initial load, INSERT/ADVANCE pushbutton   light   illuminates. 2. To   load   zone   and   easting values - Press keys in sequence,   starting   with   “E“. Example:  Zone  16,  425  km East  =    E16  425.  Observe that  zone  and  easting  in  kilo- meters   appear   in   right   data display  as  keys  are  pressed. 3.  INSERT/ADVANCE  push- button   -   Press.   Observe pushbutton   light   remains illuminated. 4.     To     load     northing     data     - Press  keys  in  sequence,  start- ing  with  “N“  or  “S“  to  indi- cate   north   or   south   hemi- sphere.   Example:   4749   km North   =   N  4749.  Observe northing   kilometers   appear in   left   data   display   as   keys are  pressed. 5.  INSERT/ADVANCE  push- button  -  Press.  Observe  that the  pushbutton  light  remains illuminated. 6.  INSERT/ADVANCE  push- button  -‘Press.  Observe  extra precision  display  for  present position   northing   and   east- ing,   to   the   nearest   meter, appears  in  left  and  right  data displays,   respectively. 7. To  load  extra  precision  east- ing  data  - Press   keys   in sequence,  starting  with  “E”. Example:  297  m  East  =  E 297.   Observe   that   easting meters   appear   in   right   data display  as  keys  are  pressed. 8.  INSERT/ADVANCE  push- button   -   Press.   Observe pushbutton   light   remains illuminated. 9.   To   load   extra   precision northing  data  -  Press  keys  in sequence,   starting   with   “N“ “S”. Example:   901   m North   =   N   901.   Observe that   northing   meters   appear in  left  data  displays  as  keys are  pressed. 3-51