What was found
HAD TO MANUALLY EXTEND GEAR DUE TO NOT EXTENDING NORMALLY.NO HYD SYS AVAILABLE. RAN QRH & MANUAL GEAR EXTENSION WORKED. GEAR CONTROL CIRCUIT BREAKER PULLED PER QRH. PERFORMED GVI OF HYD SYS & FOUND HYD SYS OVERSERVICED & BLOWDOWN BOTTLE UNDERSERVICED. PERFORMED INSPECTIONS OF PCB NZ016 HYD CONTROL & WIRING CHKS OF HYD MANIFOLD, NO SHORTS TO GROUND & CONTLNUITY AS REQUIRED. VERIFIED ALL CONDITONS WERE FREE FROM DEFECT CONCERNING 32-27 &. 29-04 R & R HYD PCB NZ016 IAW AMM 24-50-03, R & R, BLED, & OPS CHECKED HYD VALVE IAW AMM 29-11-06, SWUNG GEAR & CYCLED ALL HYD COMPONETS. PERFORMED ENG RUNS & VERIFIED HYD OPS GOOD. SERVICED GEAR BLOWDOWN BOTTLE TO WITHIN LIMITS IAW AMM 12-13-01. NO FURTHER DEFECTS.