TM 1-1510-218-10   3C-67 Table 3C-15.  CDU Annunciations and Scratchpad Messages  (Continued) ANNUNCIATION / SP MESSAGE INITIATING CONDITION RESET MECHANISM LOCATION BLINKING NOT CLEARABLE CDU MSG ALERT CONFIRM   ZERO ALL Request    to    zeroize    the system. Clear key or reselect ZERO ALL. SP N crp active Closed random pattern is currently being executed. Closed    random pattern canceled. A N X CRP IS ACTIVE Attempt to delete or modify the closed random pattern fix or delete   MFP   attribute   or modify the flight plan course or attempt to insert    a    PPOS    hold    or insert   a   waypoint   at   the active waypoint during pattern execution. Clear key. SP A CRS CHANGE > 90 Attempt  to  apply  course edit greater than 90 degrees  from  the  current inbound  course  while  in automatic   or   flyover   leg sequence mode. Clear key. SP A crs reversal Generated  at  3  nm  from a course reversal procedure execution. Enabling the holding pattern at     the     TO     or switched to capturing inbound    leg    of course    reversal or sequencing by    the    FAF    or IAF. A N X CRS    RVRSL    IS ACTIVE Attempt     to     delete     the active    waypoint,    modify the  flight  plan  course,  or attempt to insert a PPSN hold or   insert  a  waypoint at    the    active    waypoint during course reversal execution. Clear key. SP A data expired Current    date    is    greater than the data base effective period. Clear key or new data base. A N X DATA FOR? Prompt for access to Data page. Clear key or valid waypoint selection. SP N