What was found
(LOG 5955100) AFTER LANDING IN GSP NOSE WHEEL STEERING STOPPED WORKING. HYD SYS A HAD ZERO QTY/PRESSURE. RAN QRH 13.3. ATTEMPTED TAXI W/NOSE WHEEL STEERING IN ALT BUT STEERING DID NOT WORK. HYD SYS B NOW ALSO SHOWED NEAR ZERO. ON ARRIVAL FOUND RT MLG RETRACT ACTUATOR PRESSURE LINE RUPTURED. R/R BOTH RT MLG RETRACT ACTUATOR LINES IAW B737 AMM 32-32. SERVICED BOTH HYD SYS TO FULL IAW B737 AMM 12-12. FOUND METAL DEBRIS IN EMDP CASE DRAIN A SYS AND EDP CASE DRAIN A SYS. R/R A SYS EMDP AND EDP AND PERFORMED A SYS HYD FLUSHING IAW B737 29-11-00. NO FURTHER LEAKS NOTED. LEAK AND OPS CK OK.