TM 55-1510-222-10 illuminated.  All 8's displayed. c.      HSI   All   angles   30°.      Cross-track deviation  bar  one  dot  right.    All  INS flags retracted. d.  Flight Director/Autopilot A 15° steering command is issued. e.    Mission  Control  Panel  INS  UPDATE and   NO   INS   UPDATE   annunciator illuminated. 7.  CDU TEST switch Hold depressed, and rotate AUTO-MAN  switch  to  AUTO.    Observe  all indications are as in step 6 except a 15°  left steering  command  is  issued.    On  HSI,  all angles are 0° and cross-track deviation bar is one dot left. 8.      CDU   TEST   switch   Release.      If   desired, decouple    INS.        Observe    that    operation returns to normal. (5) To program destinations or TACAN coordinates: NOTE If latitude and longitude (Geographic) coordinates    are    being    used,    skip following procedure (5) (a.) and execute next procedure (5)(b.  ).  Enter all  of  the  data  for  a  given  destination or TACAN before starting to enter data for another. (a) Insertion of UTM way-point coordinates: 1.    Data  selector  UTM  WY  PT.    Data displays  will  indicate  last  coordinates inserted into related way-point. 2.  Thumbwheel Set to way-point number to be loaded. NOTE UTM data may be loaded in any order and,  until  final  entry,  a  value  may  be reloaded. 3.  To load zone and easting Press keys in sequence, starting with E. Example:      Zone   16,   425   km   East   =   E16   425. Observe that zone and easting in kilometers appear in the right data display as keys are pressed. 4.        INSERT/ADVANCE    pushbutton    - Press. Observe pushbutton annunciator is illuminated. 5.        To    load    northing    Press    keys    in sequence,   starting   with   N   or   S   to indicate north or south hemisphere. Example:    4749  km  North  =  N  4749.    Observe  that northing  kilometers  appear  in  the  left  data  display  as keys are pressed. 6.      INSERT/ADVANCE      pushbutton   - Press. Observe pushbutton annunciator remains illuminated. 7.      INSERT/ADVANCE      pushbutton   - Press. Observe   that   an   extra   precision   display   related   to resident  value  of  northing  and  easting,  to  the  nearest meter,     appears     in     left     and     right     data     displays, respectively. 8.  To load extra precision easting value! Press keys in sequence, starting with E. Example:    297  m  East  .    =  E  297.    Observe  that easting meters appear in the right data display as keys are pressed. 9.      INSERT/ADVANCE      pushbutton   - Press. Observe pushbutton annunciator remains illuminated. 10.      To   load   extra   precision   northing value Press keys in sequence, starting with N or S. Example:      901   m   North   =   N   901.      Observe   that northing meters appear in left data display as keys are pressed.    The  value  is  always  added  to  the  normal value   regardless   of   which   key   (N/S)   is   pressed   to initiate   the   entry.      The   normal   entry   establishes   the hemisphere. 11.      INSERT/ADVANCE      pushbutton   - Press. Within    3    seconds    computer    converts    input    into latitude   and   longitude   for   storage   in   memory.      The stored  value  is  again  converted  to  UTM  for  display. The INSERT/ADVANCE pushbutton annunciator extinguishes.  Conversion routines may cause displays to change by up to 10 m. 3-50