As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 750 WHILE EN-ROUTE, DURING FLIGHT, SEAT 3C MOTOR OVERHEATED. HOT ACRID SMELL FROM UNDER SEAT. SPARKS FROM AREA POWER DISCONNECTED. THE FLIGHT DIVERTED TO YJT WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND VACUUM MOTOR FOR LUMBAR BAGS BURNT. REMOVED AND REPLACED VACUUM MOTOR. ALSO FOUND CHAFED WIRING HARNESS TO RIGHT SEAT. REMOVED AND REPLACED WIRING HARNESS.