TM 1-1510-225-10 3A-51 (a)   DATE.   This line displays the current Greenwich  date  (day,  month,  and  year).    When  the date   is   entered,   the   numerals   01   through   12   are entered  for  the  months.    The  computer  changes  this month designation to its alpha equivalent. (b)   GMT.    This  line  displays  the  time  of day in Greenwich Mean Time in hours and minutes. (c)   IDENT.   This line displays the airport identifier of the nearest airport to the aircraft's position at  shutdown.    Dashes  will  be  displayed  in  this  line when  the  aircraft's  position  coordinates   are displayed on the POS lines. (d)   POS.   This line displays the aircraft's position at shutdown.  Dashes will be displayed in this line  if  an  airport  identifier  is  displayed  on  the  IDENT line. (e)   Software Status.   The bottom line of the   display   shows   the   unit   part   number   and   the software modification status number. e.   Navigation Section (NAV Key). (1)   Navigation   1/4   Page.      Refer   to   Figure 3A-26. Figure 3A-26.  FMS Navigation 1/4 Page (a)   FR,  DIRECT,  HOLD,  PROCEDURE TURN, DME ARC, or PSEUDO VORTAC Line. 1   FR.    If  FR  (from)  is  displayed  on this line, the  From waypoint identifier will be displayed on the left and the time of departure from or overhead at that waypoint will be displayed in the right field. 2   DIRECT.      DIRECT   displayed   on this line indicates that the system is navigating to the next waypoint via a direct route.  The time overhead at the last waypoint will be displayed on the right field. 3   HOLD.    This  line  indicates  that  a holding  pattern  has  been  initiated.    RIGHT  or  LEFT displayed  on  the  left  side  of  the  field  indicates  the direction  of  turns  to  fly  the  pattern  as  entered  on  the Hold page.  MANUAL or AUTO  on the right side of the field  indicates  the  programmed  exit  mode  as  entered on   the   Hold   page.      Selecting   MANUAL   initiates   a continuous  hold  at  the  fix  until  action  is  taken  by  the crew  to  exit  the  hold.    Selecting   AUTO  executes  an exit  the  second  time  the  aircraft  passes  over  the  fix.   The  system  then  sequences  to  the  next  waypoint  on the  flight  plan.    This  field  can  be  edited  by  using  the BACK key. 4   PROCEDURE    TURN.       Indicates that a procedure turn has been initiated. 5   DME  ARC.    Indicates  that  a  DME arc has been initiated. 6   PSEUDO VORTAC.  Indicates that a  system  is  navigating  to  a  pseudo  VORTAC.    This line  displays  the  from  (FR)  waypoint  identifier  on  the left with the time of departure or time overhead at that waypoint  displayed  on  the  right.    This  line  can  also display  DIRECT,  HOLD,  PROCEDURE  TURN,  DME ARC, or PSEUDO VORTAC. (b)   TO, AR, HP, or PT Line. 1   TO.   When TO is displayed on this line, the  TO waypoint identifier will be displayed in the left field and the ETA at that waypoint will be displayed in the right field. 2   AR  (DME  Arc).    When  AR  (DME arc) is displayed on this line, the identifier of the DME arc waypoint being flown to will be displayed in the left field  and  the  ETA  at  that  waypoint will be displayed in the right field. NOTE When the system is flying a DME ARC, the displayed     data     will     momentarily     show dashes as the system changes arc segments and new computations are made. 3   HP (Holding Pattern). HP displayed  on  this  line  indicates  that  a  holding  pattern has been programmed at the waypoint being flown to.   The  to  HP  waypoint  identifier  being  flown  to  will  be displayed in the left field and the ETA at that waypoint will be displayed in the right field.