As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT LOST WX RADAR 1 HOUR AFTER TAKEOFF. RADAR SCANNER PN 2041444-0402 WAS INSTALLED ON THIS AIRPLANE 2/25/2002. AIRPLANE EXPERIENCED ONE PRIOR WXR FAULT ASSOCIATED WITH THE ANTENNA 1/9/2006 WITH GROUND TEST OK. AIRPLANE HAS NOT EXPERIENCED ANY FURTHER WXR SCANNER FAULTS SINCE REPLACEMENT. THIS EVENT IS CONSIDERED AN ISOLATED CASE FOR THIS AIRPLANE AND THE 747 FLEET.