As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING CLIMB WE HAD A VERY STRONG BURNING SMELL. PLASTIC OR ELECTRICAL; AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT MIA. ACCOMPLISHED W/C 08L00021001 AND NO ODOR FOUND, NO FAULT FOUND.