What was found
AIRCRAFT WAS GROUNDED: MAINTENANCE FOUND HYD FLUID IN FUEL RT WING TANKS WHILE TROUBLESHOOTING GREEN HYD LOW QYT WITH 4 SERVICES IN TWO DAYS, FOUND NO EXTERNAL HYD LEAKS. PERFORMED LEAK CHECK OF GREEN SYSTEM HYDRAULIC LINES IN R/H WING SURGE TANK. NO LEAKS FOUND. RT WING FUEL SAMPLE PRODUCED TRACE AMOUNTS OF WATER ONLY. MAINTENANCE FOUND NOSE GEAR CLOSURE LINE LEAKING. REMOVED AND REPLACED CONTAMINATED INSULATION AND REPLACED HYD LINE AND RE-INSTALLED ALL FWD CARGO PANELS AND FLOORING OPS LEAK CHECKS GOOD IAW AMM'S 25-54-11, 32-31-00 AARD 21-21-00, EA 299349.