As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6426 - IAD-DTW - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO RIGHT ENGINE OIL CONTAMINATION WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND FOUND FLAKES OF METAL ON CHIP DETECTOR AND CLEANED AND REINSTALLED CHIP DETECTOR. ALSO, MAINTENANCE PERFORMED SOAP SAMPLE, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)