As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS STRONG ELECTRICAL (ACRID) ODOR IN FORWARD CABIN. ODOR DECREASED WHEN RECIRC AND GASPER FANS WERE SELECTED OFF. MAINTENANCE ACCOMPLISHED JOB CARD 05-96-70, FOUND UPPER RECIRC FAN BURNT. REMOVED AND REPLACED FWD UPPER RECIRC FAN IAW AMM 21-25-01. ALL REQUIRED TEST PASSED, NO ODOR FOUND.