As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4778, CREW REPORTED ON CLIMB-OUT A OIL ODOR IN FORWARD PART OF THE CABIN. CREW DIVERTED TO BWI, NO OTHER PROBLEMS NOTED. AIRCRAFT REMOVED FROM SERVICE. DURING TROUBLE SHOOTING FOUND LEFT LANDING LIGHT CONTACTOR INOPERATIVE. REMOVED AND REPLACED CONTACTOR IAW EMB135 AMM CHAPTER 33-41-03. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.