What was found
ON APPROACH, PILOT SELECTED FLAP DOWN, PILOT NOTICED HYD FAILED LIGHT ILLUMINATED. THE HYD PRESS GAUGE INDICATED 0. PILOT DECIDED THAT THE WINDS WERE TOO HIGH TO PERFORM A LANDING WITHOUT FLAPS AT THAT POINT, PILOT DIVERTED BACK. DURING APPROACH PILOT PERFORMED AN EMER EXTENSION OF THE LG, PILOT RECEIVED THREE GREEN DOWN & LOCKED ANNUNCIATOR LIGHTS & LANDED WITHOUT FURTHER INCIDENT. INSPECTION REVEALED CRACKED HYD LINE, PN 27-81032-177, IN RT LG WW FOR FLAP DOWN PRESS LINE. R & R HYD LINE. PERFORMED OPERATIONAL CHECKS OF HYD SYS. ALL SYS CHECKS WERE NORMAL.