NOTICE ADVISORY TO NAVSTAR USERS (NANU) 1999055
SUBJ: SVN27 (PRN27) FORECAST OUTAGE SUMMARY JDAY 117/0824 - JDAY 117/1859
1.     NANU TYPE: FCSTSUMM
       NANU NUMBER: 1999055
       NANU DTG: 271929Z APR 1999
       REFERENCE NANU: 1999046
       REF NANU DTG: 231927Z APR 1999
       SVN: 27
       PRN: 27
       START JDAY: 117
       START TIME ZULU: 0824
       START CALENDAR DATE: 27 APR 1999
       STOP JDAY: 117
       STOP TIME ZULU: 1859
       STOP CALENDAR DATE: 27 APR 1999

2.  CONDITION: GPS SATELLITE SVN27 (PRN27) WAS UNUSABLE ON JDAY 117
    (27 APR 1999) BEGINNING 0824 ZULU UNTIL JDAY 117 (27 APR 1999)
    ENDING 1859 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