As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GUM - FLT NR 868 - AFTER DEPARTURE FROM GUAM, WEATHER RADAR WILL NOT PAINT ON GROUND CLUTTER. SCREEN BLANKS OUT BETWEEN 30 DEGREES AND 60 DEGREES. AIRCRAFT DIVERTED BACK TO GUAM. MAINTENANCE FOUND WEATHER RADAR ANTENNA NO GOOD, REMOVED AND REPLACED WEATHER RADAR ANTENNA, AS PRECAUTIONARY, ALSO REMOVED AND REPLACED WEATHER RADAR TRANSCEIVER UNIT. WEATHER RADAR SYSTEM TEST GOOD AND AIRCRAFT DISPATCHED. (M)