As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENG RUNNING DURING PUSHBACK, ELEC BUSS FAILURE. SMOKE IN FLIGHT DECK WHILE BEING TOWED BACK IN. SDR FILED OPEN, NR 2 PACK OVERHEAT WAS DETERMINED TO BE THE CAUSE OF SMOKE. [SUP 05-07-07] NR 2 PACK WAS FOUND TO BE CAUSE OF SMOKE IN C/P. R&R NR 3 ENG GEN CONT PANEL PER MM 24-20-00. RAN NR 3 ENGINE MANY TIMES WITH LOAD APPLIED. OPS CHECKS GOOD.