As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE NOSE GEAR INDICATED UNSAFE. BOTH RED AND GREEN LIGHT WITH THE GEAR HANDLE IN UP POSITION. FURTHER INSPECTION REVEALED THE A SYSTEM HYD RAULIC DECREASING RAPIDLY TO ZERO. THE POM C/W AND LANDING MADE. ALL GEAR AND FLAP INDICATION WERE NORMAL. REPLACED PRESS LINE TO LOCK RETRACT ACTUATOR.