As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, AT MSL 1000, FLIGHT CREW OBTAINED A FAINT SMELL OF SMOKE AND ELECTED TO RETURN TO IAD MAINTENANCE BASE. INSPECTION OF AIRCRAFT INDICATED SMOKE MAY HAVE EMANATED FROM TAXI LIGHT GROUND WIRE. REPLACED RT NOSE TAXI LIGHT AND OPS CHECKED GOOD.