As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YELLOW RESERVOIR LOW LEVEL FAILURE WITH BLUE SYS LOW AND GREEN FLUCTUATING AS WELL. FLIGHT LANDED WITHOUT INCIDENT. REPLACED B-NUT AND O-RING ON PTU MANIFOLD REF MM 29-13-15-991-001 PTU MANIFOLD ITEM 5 AND 52 LEAK CHECK OK. FOUND BAD O-RING SOURCE OF LEAK. SERVICED YELLOW SYSTEM.