What was found
EXTENDING THE FLAPS FOR APPROACH, DID NOT WORK. MLG & SPEED BRAKES INOP. BROKE OFF APPROACH. MANUALLY EXTENDED GEAR IAW QRH & DID A NO FLAP APPROACH & NO FLAP LANDING QRC. DIVERTED TO AN AIRPORT WITH LONGER RUNWAY. NO ANNUNCIATORS CAME ON DURING EVENT. NO INDICATIONS OF A LEAK & RESERVOIR SHOWED NORMAL. MAIN BRAKE SYSTEM WORKED. PERFORMED GVI , HYD SYS, FOUND HYD SYS OVERSERVICED, BLOWDOWN BOTTLE TO BE UNDERSERVJCED. SAFTEY WIRE INTACT. R & R HYD PCB NZ016 IAW AMM 24·50-03, REMOVED, REPLACED, BLED, & OPS CHECKED HYD VALVE IAW AMM 29-L1S06. SWUNG GEAR AND CYCLED ALL. HYD COMPONENTS. PERFORMED ENGINE RUNS AND VERIAED HYDS OPS. SERVICED BLOWDOWN BOTTLE IAW AMM 12-13-01. NO FURTHER DEFECTS.