TM 1-1510-218-10   3C-59 base  waypoint  with  the  indicated identifier. (c)   Entry and Display of Latitude- Longitude   Waypoints.      Latitude-longitude   waypoints are   entered   in   the   form   of   degrees   and   minutes followed  by  optional  decimal  minutes  or  seconds and decimal  seconds.    The  required  format  is  an  N  or  S followed by four or six digits, with a decimal point and up to three additional optional digits and followed by E or W with five or seven digits, with a decimal point and up to three additional digits optional. Latitude-longitude   waypoints   are   displayed   as whole    minutes    on    all    CDU    pages    except    in    the scratchpad   when   the   value   is   copied   and   on   the Position, Integrated Navigation, Start 1, or Data pages where thousandths of minutes are displayed. (d)   Entry and Display of Identifier Waypoints.      Identifiers   are   entered   as   up   to   five alphanumeric.    Identifier  waypoints  are  displayed  left justified,  with  alphabetic  characters  always  written  as capital  letters.    Crew-entered  identifiers  are  limited  to between  two  and  five  characters.    Single  character identifiers cannot be entered by the crew and are only accessed  by  inserting  a  SID,  STAR,  or  approach  that includes such a waypoint in the procedure. (e)   Entry    and    Display    of    Identifier    / Bearing  /  Distance  Waypoints.    Identifier  /  bearing  / distance    waypoints    are    entered    as    an    identifier followed by a   /, followed by the bearing, followed by a /, followed by distance.  Bearings are entered as three digits  optionally  followed  by  a  decimal  point  and  an additional  digit.    Bearing  is  displayed  as  three  digits rounded to the nearest degree.  An entry of 145.3° will be  displayed  as  145°.    In  the  case  of  a  number  such as  145.5°,  the  CDU  always  rounds  up  to  the  nearest whole  number.    Distances  are  entered  as  up  to  four digits  optionally  followed  by  a  decimal  point  and  one additional digit. When     a     bearing/distance     is     applied     to     a waypoint,   the   waypoint   will   appear   as   one   of   the following. 1.   If     the     waypoint     is     an     ICAO identifier and the distance is 999 nm  or  less,  the  waypoint  will be  displayed  as  identifier/bearing/ distance (e.g. EDW/350/45). 2.   If  the  waypoint  is  not  a  waypoint identifier or the distance is greater than  999  nm,  the  waypoint  will  be displayed as latitude/longitude. (f)    Use     of     Magnetic     Variation     and Declination.    Magnetic  variation  is  used  in  converting most azimuth angles from true to magnetic reference.   Courses     into     navaid     waypoints     and     any     offset waypoints  described  relative  to  these  waypoints  use stored     station     declination     rather     than     magnetic variation in the computations, so that they match those on published Instrument Flight Rules (IFR) charts. (g)   Entry and Display of Time and Date.   Time  is  entered  with  no  delineators  between  hours, minutes, and seconds.  Seconds are optional, so that three to six digits are acceptable.  If no time or date is available  for  a  given  field,  blanks  are  displayed.    All times    are    entered    and    displayed    as    Coordinated Universal Time (UTC).  Dates are entered and written using the military convention of day, month, year (six digits  total).    Example  would  be  16/12/97  (December 16, 1997). The   FMS-800   system   has   been   designed   to avoid  date  and  time  rollover  problems.    The  operator will  not  see  problems  if  a  current  date  and  time  are entered into the CDU prior to initializing GPS modules. (h)   Deletion  of   Data.    Most  data  entry fields    may    have    the    associated    data    deleted    by entering a   –  in  the  scratchpad  and  pressing  the  line select  adjacent  to  the  desired  field.    In  some  cases, the  dash  entry  causes  the  data  to  revert  to  a  fixed default value (e.g., wind  to 360º/0). (3)   System   Annunciations   and   Scratchpad Messages.    The  CDU  will  alert  the  crew  of  avionics failures,    degraded    operations,    system    modes    of operation,    or    operator    entry    errors    via    the    CDU annunciation line and scratchpad. (a)   Annunciations   on   the   annunciation line of the CDU. (b)   Scratchpad messages only displayed locally on the CDU causing the condition. (c)   Master   CDU   alert   annunciation   is provided as an external alert in the pilot’s primary field of view. Table 3C-15 provides a list of CDU annunciations and scratchpad messages.