As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GREEN HYDRAULIC SYSTEM LOSS IN CRUISE. QUANTITY AND PRESSURE READING ZERO. *S/D* CHECKED NR 1 ENGINE FOR EXTERNAL HYDRAULIC LEAKS. FOUND LOW PRESSURE SWITCH LOOSE AND LEAKING. REPLACED SHREDDED O RING AND INSTALLED SWITCH WITH PROPER TORQUE. SERVICED GREEN SYSTEM. LEAK AND OPS CHECK GOOD.