What was found
AFTER DEPARTURE PILOT SELECTED LG HANDLE TO RETRACT POSITION, LG FAILED TO FULLY RETRACT. PILOT TROUBLESHOOTING REVEALED CB HAD POPPED & LG RED INDICATOR LIGHT WAS ILLUMINATED. RESET CB & PLACED LG HANDLE IN EXTEND POSITION, BOTH LT & RT MLG EXTENDED & LOCKED, NOSE GEAR FAILED TO EXTEND, CB POPPED AGAIN & LOW HYD FLUID INDICATOR LIGHT ILLUMINATED. PILOT DECIDED TO MANUALLY EXTENDED LG USING EMER PROCEDURES & LANDED WITHOUT FURTHER INCIDENT. INSPECTION OF ACFT FOUND THE HYD LINE CONNECTED TO 20619-1 FITTING WAS CRACKED. R & R FITTING IAW MM 29-10-00, PERFORMED LG OPERATIONAL CHECKS IAW MM 32-31-00. ALL OPERATIONAL CHECKS WERE NORMAL.