What was found
HYD QTY LOW CTR (LOST ALL HYD FLUID IN CTR) SVC'D HYD FLUID TO CTR HYD SYS TO PROPER LEVEL IAW AMM 12-12-01-3-0, PERF CTR HYD SYS LEAKS FOUND. NO EXTERIOR LEAKS CAN BE FOUND. SUMP DRAINED LT FUEL TK & RT FUEL TK, FOUND HYD CONTAMINATED IN RT FUEL TK FUEL SAMPLE. SUSPECTED HYD LEAKS FROM THE CTR HYD SYS HEAT EXCHANGER OR PIPING INSIDE THE RT FUEL TK. REQUIRED RT FUEL TK ENTRY TO LOCATE THE LEAKS. FOUND HYDRAULIC LEAK INSIDE RT SIDE FUEL TANK, UNDERWING ACCESS PANEL 633EB, ONE HYD PIPE ISOLATED FROM THE SLEEVE. REPAIRED PIPING PER AMM 20-10-09-8, PERF. LEAKS CHECK SATISFACTORY. PERF. CTR HYD SYS FLUSHING PER AMM 29-11-00-2 REPLACED THE PRESSURE AND CASE DRAIN AC MOTOR PUMP FILTER PER AMM 29-11-41-4-0. SERVICED THE HYDRAULIC TO PROPERLY LEVEL,PERFORMED PRIMARY FLT CONTROL OPERATION PER AMM 27-00-00.