As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOW HYDRAULIC CAME ON 30 MINUTES OUTSIDE PHX HYDRAULIC PRESSURE DROPPED BELOW 600 PSI. MAINTENANCE TROUBLESHOT HYDRAULIC LEAK TO A LOOSE LINE ON LEFT HAND RETRACT ACTUATOR INSPECTED LINE NO DEFECTS NOTED REPLACED O-RING TIGHTENED RETURN LINES PERFORMED OP'S AND LEAK CHECKS I/A/W LEARJET 35A AMM 32-43-00 NO LEAKS NOTED OP'S CHECKED GOOD. AIRCRAFT RETURNED TO SERVICES