As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JLN - FLT 7067 - HYDRAULIC PRESSURE FELL TO ZERO, LANDING GEAR WOULD NOT EXTEND, PERFORMED EMERGENCY GEAR EXTENSION AND LANDED. MAINTENANCE REPLACED RT HYDRAULIC ISOLATION CHECK VALVE. RESET GEAR BYPASS PIN, GROUND RUNS REVEALED NO LEAKS SYSTEM OK. (M)