NOTICE ADVISORY TO NAVSTAR USERS (NANU) #050-94042
SUBJ: ACTIVATION OF ANTI-SPOOFING (A/S)
1. CONDITION: A/S WAS ACTIVATED ON DAY 031 (JAN 31 94) AT 0000 UTC.
DUE TO THE 8 DEC 93 DECLARATION OF INITAL OPERATIONAL CAPABILITY
(IOC) THE P-CODE WILL NOT NORMALLY BE AVAILABLE TO USERS WHO DO NOT
HAVE VALID CRYPTOGRAPHIC KEYS (IAW FEDERAL RADIONAVIGATION PLAN
1992).
2. POC: CAPT THOMPSON AT (719) 550-6378 OR DSN 560-6378.