As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING A STRONG ELECTRICAL ODOR STARTED THEN DISSIPATED THROUGHOUT CABIN AND COCKPIT. FOUND SLIGHT ODOR FROM AIR DUCTS WHEN APU INITIALLY TURNED ON; THEN DISSIPATED QUICKLY. T/S PER FIM 21-00-806. SERVICED APU, CHECKED BLEED VALVE DUCT AND INLET FOR EVIDENCE OF OIL. NO DEFECTS FOUND. CHECKED CHIP DETECTOR; NO DEBRIS FOUND. SEE TTG8Q01BQET0 FOR L&R COALESCER BAG R&R. RAN APU AGAIN AND ODOR WAS NOT PRESENT.