What was found
GRU - FLT 0950 - DURING CLIMB AT FL 230, WX RADAR FAIL MSG BEGAN TO INTERMITTENTLY FLASH IN ALL MODES AND RANGES. AT FL 290, WX RADAR FAIL MSG WAS STEADILY ILLUMINATED IN ALL MODES AND RANGES. REPEAT WRITE-UP 97.98.99, AND 04. ACFT INSPECTED AND FOUND IN SAFE CONDITION FOR FERRY FLIGHT FROM GRU TO JFK FOR WEATHER RADAR SYSTEM MX EVALUATION. FERRY FLIGHT AUTHORIZED BY SPOTTING MESSAGE NR 02-162 DATED 2-26-97. CLEANED CONNECTORS ON WXR R/T AND ANTENNA. ACCOMPLISHED WEATHER RADAR BITE PER MM 34-7. NO FAULT NOTED. SYSTEM OK FOR SERVICE. NOTE: ACCOMPLISHED FOLLOW-UP BILL OF WORK JFK. FOUND WAVE GUIDE IMPROPERLY CONNECTED. CORRECTED WAVE GUIDE AND SYSTEM OPERATIONS FOUND NORMAL. (X)