What was found
FLIGHT CREW REPORTED, SPARKS AND SMOKE IN AFT LAV AFTER POWER SWITCH FROM APU TO ENGINE ELECTRICAL POWER. MAINTENANCE PERSONNEL COMPLIED WITH EO 2451-01.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT CREW REPORTED, SPARKS AND SMOKE IN AFT LAV AFTER POWER SWITCH FROM APU TO ENGINE ELECTRICAL POWER. MAINTENANCE PERSONNEL COMPLIED WITH EO 2451-01.