NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1999057
SUBJ: SVN27 (PRN27) FORECAST OUTAGE SUMMARY JDAY 121/0902 - JDAY 121/2004
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 1999057
       NANU DTG: 012034Z MAY 1999
       REFERENCE NANU: 1999052
       REF NANU DTG: 271445Z APR 1999
       SVN: 27
       PRN: 27
       START JDAY: 121
       START TIME ZULU: 0902
       START CALENDAR DATE: 01 MAY 1999
       STOP JDAY: 121
       STOP TIME ZULU: 2004
       STOP CALENDAR DATE: 01 MAY 1999

2.  CONDITION: GPS SATELLITE SVN27 (PRN27) WAS UNUSABLE ON JDAY 121
    (01 MAY 1999) BEGINNING 0902 ZULU UNTIL JDAY 121 (01 MAY 1999)
    ENDING 2004 ZULU.

3.  POC: CIVILIAN - NAVCEN AT (703)313-5900, HTTP://WWW.NAVCEN.USCG.MIL
    MILITARY - CAPT TONY OCCHI, 2 SOPS NAVIGATION ANALYST, DSN 560-6378,
    COMM 719-567-6378, GPS@SCHRIEVER.AF.MIL, HTTP://WWW.SCHRIEVER.AF.MIL/GPS