As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAS REPORT STRONG RUBBER BURNING ODOR AFT ACFT RT. PER CREW, ODOR OCCURRED JUST AFTER TAKEOFF AND DISSIPATED QUICKLY. DID NOT SMELL ANYTHING FOR THE REMAINDER OF THE FLIGHT. INSPECTED ACFT & FOUND NO FAULTS. SUSPECT ODOR CAME FROM OUTSIDE ACFT. ACFT OK FOR SERVICE. REF FIM SMOKE ODOR INSPECTION 21-00 TASK 830.