As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4263 DURING THE TAKEOFF THE CREW REPORTED A STRONG OILY ODOR IN THE COCKPIT. BLEEDS OPEN AND BOTH PACKS WERE ON. THE FLIGHT ATTENDANT REPORTED THE CABIN SMELLED NORMAL. THE AIRCRAFT WAS REMOVED FROM SERVICE. ENGINE RUNS COMPLETED IAW ETN EM-72-034 R4. NO DEFECTS NOTED. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.