As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. CREW REPORTED AN ELECTRICAL BURNING ODOR IN CABIN. STRONGER IN FWD PORTION OF CABIN. MOMENTARILY SMELLED IN COCKPIT. MAINTENANCE ACCOMPLISHED MCM 05-96-70 WITH NO UNUSUAL ODORS NOTED. NO CIRCUIT BREAKERS FOUND TRIPPED. NO CABIN LIGHTING FOUND INOPERATIVE. NO FUMES NOTED FROM AIR CONDITIONING PACKS WITH APU OR EITHER ENGINE PROVIDING BLEED SOURCE.