What was found
WEATHER RADAR SYS ADVISORY WXR FUNCTIONS HAVE FAILED OR PARTIALLY FAILED ON BOTH LEFT AND R IGHT SIDES OR MANUALY SELECTED TO A FAILED WXR. FIM TASK REF : 34-40-F2-A8A-421A-A CMC MSG# 3460111 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: CRUISE NARRATIVE: LEFT INTEG SURVEILLANCE SYSTEM PROC UNIT REF LP 4613175. R&R WAS PERFORMED ON WXR DRIVE UNIT REF AMM 34-42-03. OPS TEST PASSED REPEATED VIBRATION/GRIND FROM NOSE AREA WITH RADAR FAILURE DRIVE, ASSY, DR OFF 78-3443-9-9003 0469 ON 78-3443-9-9003 0040 DRIVE, ASSY, DR OFF 78-3443-9-9003 0469 ON 0000 R&R WRX DRIVE UNIT IN REF WITH AMM DMC-B787-A-34-42-03-00A-720A-A. PERFORMED OPS TEST ON WXR L & R IN REF AMM DMC-B787-A-34-42-00-21A-320A-A. OPS TEST PASSED. NO OTHER FAULTS FOUND AT THIS TIME. AC OK FOR SERVICE. PARTS USED: 78-3443-9-9003,QTY :1 ROTABLE PARTS CHG:TT # 1755084 SN OFF 0469 PN OFF 78-3443-9-9003