As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLT 278 - EN ROUTE DFW-ANC, DETECTED HYDRAULIC QUANTITY INDICATION ILLUMINATE. DIVERTED DEN AND LANDED WITHOUT FURTHER INCIDENT. REPLACED RIGHT PRESSURE SWITCH O-RING. SERVICED HYDRAULIC SYSTEM. LEAK CHECKS GOOD. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)