As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7514 - PHF-IAD - DURING TAXI, AIRCRAFT RETURNED TO GATE DUE TO RIGHT FIRE WARNING LIGHT INOP. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. AIRCRAFT FERRIED TO IAD. MAINTENANCE INSPECTED AND CLEANED LIGHT SOCKET ASSY. OPS CHECKED OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)