As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE - FLT 3165 - CREW REPORTED A VERY STRONG BURNING SMELL/SULPHUR SMELL IMMEDIATELY AFTER GEAR UP, AIRCRAFT RETURNED TO FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AIRCRAFT, ALSO OPERATIONAL CHECKS WERE PERFORMED WITH ENGINES RUNNING AT DIFFERENT POWER SETTINGS AND ENVIROMENTALS ON USING DIFFERENT SETTINGS AND LOADS WITH NO DEFECTS NOTED ON ANY SYSTEM. AIRCRAFT RELEASED FOR SERVICE. (M)