As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT-HKY- FLT 5048 - CAPTAIN REPORTED A STRONG RUBBER OR BURNING SMELL IN THE COCKPIT. CAPTAIN TURNED OFF ALL FLOWS AND SMELL WENT AWAY. AIRCRAFT RETURNED TO CLT AND NO EMERGENCY WAS DECLARED ALSO. NO PASSENGERS WERE ABOARD THIS FLT. AIRCRAFT WAS INSPECTED AND GROUND RUN, THIS PROBLEM COULD NOT BE DUPLICATED. (M)