What was found
CARGO SMOKE ON TAXI OUT INDICATION ONLY. RETURN TO GATE. MAINTENANCE REPLACED WEU WITH SERVICABLE UNIT ALL CHECKS GOOD. (P/N ON/ 005W500) (S/N ON/ 1464), (S/N OFF/ 1643). ALL WORK IAW SF340 MM CH 31.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CARGO SMOKE ON TAXI OUT INDICATION ONLY. RETURN TO GATE. MAINTENANCE REPLACED WEU WITH SERVICABLE UNIT ALL CHECKS GOOD. (P/N ON/ 005W500) (S/N ON/ 1464), (S/N OFF/ 1643). ALL WORK IAW SF340 MM CH 31.