As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) RIGHT MAIN GEAR DOOR AMBER LIGHT REMAINED ON AFTER GEAR RETRACTION. ALTERNATE UNDERCARRIAGE EXTENSION COMPLETED IAW QRH, ATB. DURING BLEEDING PROCESS, FOUND HYDRAULIC LEAK AT THE RT ELEVATOR PCU, THIS ALLOWED AIR INTO THE NR 2 SYSTEM LIKELY AFFECTING THE FUNCTION OF THE RT MLG DOOR.