NOTICE ADVISORY TO NAVSTAR USERS (NANU) #055-94045
SUBJ: PRN3 UNUSABLE 043/1234-043/1855
REF: NANUS 051 AND 052 (DTGS 121530Z FEB 94 AND 121912Z FEB 94)
1. CONDITION: PRN3 (SVN11) WAS UNUSABLE ON DAY 043 (12 FEB 94)
BEGINNING 1234 UTC UNTIL DAY 043 AT 1855 UTC. USERS SHOULD HAVE BEEN
UNABLE TO USE PRN3 FOR A NAVIGATION SOLUTION BEGINNING AT 1445 UTC
DUE TO  A HEALTH CHANGE. FROM 1234 UTC UNTIL 1445 UTC USERS MAY HAVE
EXPERIENCED UNUSUALLY LARGE RANGE AND RANGE RATE ERRORS. POST
ANALYSIS  ON THIS OUTAGE REFERENCED IN NANUS 051 AND 052 REVEALED THE
EARLIER START TIME.
2. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN 560-6378.