TM  1-1520-240-10            3-3-27 NOTE In MGRS mode, wind speed is displayed in km/hr; in LAT/LONG mode, wind speed is dis- played in knots. Leading zeros must be enter- ed.  Sea  current  direction  is  defined  as  the direction the current is flowing. (1) Set  MODE  switch  to  LAT/LONG  (MGRS may be used). (2) Set  DISPLAY  switch  to  WIND-UTC/DATA and observe the standard wind speed and direction dis- play. (3) Depress the ENT key twice to display the selection menu. 1>SEA CURRENT 2>SURFACE WIND 3>GPS STATUS 4>DATA LOAD end (4) Depress the 1 key to select SEA CURRENT. The display indicates: SEA CURRENT SP;XXXKn DIR:XXX_ (5) Entry of sea current speed and direction: as an example, consider the entry 4 knots and 135 degrees. Depress KYBD key. Observe that the speed field blinks. (6) To enter speed, depress keys 0, 0 and 4. The speed   indicates   004Kn.   The   maximum   sea   current speed that may be entered is 50 knots. (7) Depress  KYBD  key.  The  direction  display blinks. (8) To enter direction, depress keys 1, 3, and 5. Direction indicates 135_. (9) Depress ENT key. The display momentarily blinks and then reappears. NOTE To abort entry of sea current, enter a sea cur- rent speed of 000 using the above procedure. l.  Procedure for Entering Surface Wind Speed and Direction for Water Motion Correction. NOTE Not required or necessary when in combined or GPS mode. In MGRS mode, surface wind speed  is  entered  in  km/hr:  in  LAT/LONG mode, surface wind speed is entered in knots. Leading zeros must be entered. Wind direc- tion is defined as the direction from which the wind originates. (1) Set  MODE  switch  to  LAT/LONG  (MGRS may also be used). (2) Set  DISPLAY  switch  to  WIND-UTC/DATA and observe the wind speed/direction display. (3) Depress ENT key twice to display the selec- tion menu. 1>SEA CURRENT 2>SURFACE WIND 3>GPS STATUS 4>DATA LOAD end (4) Depress  the  2  key  to  select  SURFACE WIND. The display indicates: SURFACE WIND SP:XXXKn DIR:XXX_ (5) Entry  of  wind  speed  and  direction:  as  an example,  consider  the  entry  of  20  knots  and  150  de- grees. Depress KYBD key. Observe that the wind speed field blinks. (6) To enter speed, depress keys 0, 2 and 0. The wind speed indicates 020. The maximum surface wind speed is 50 knots. (7) Depress  KYBD  key.  The  direction  display blinks. (8) To enter direction, depress keys 1, 5, and 0. Wind direction indicates 150_. (9) Depress ENT key. The display momentarily blinks and then reappears. NOTE To abort entry of surface wind speed and di- rection,  enter  a  surface  wind  speed  of  000 using the above procedure. 3-3-51. Flight Procedures. NOTE This procedure is applicable to the Doppler only mode. Present position is automatically updated when DGNS is in combined mode. a.  Updating Present Position from a Stored Destina- tion. NOTE The preface is: The aircraft is flying to a des- tination, that is, the FLY-TO Destination is set to the number of the desired destination. (1) Set  DISPLAY  switch  to  DIST/BRG/TIME position. Distance, bearing and time-to-go to the fly-to destination are displayed. (2) When  the  aircraft  is  over  the  destination, depress KYBD key. Observe that the display freezes.