As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4637, CREW REPORTED A STRONG ELECTRICAL ODOR IN COCKPIT AND CABIN. ACFT REMOVED FROM SERVICE. INSPECTED AND DETERMINED ODOR TO BE CAUSED BY LEFT A/C PACK. REMOVED AND REPLACED THE LEFT AIR CYCLE MACHINE IAW AMM 21-51-08. OPS AND LEAK CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.