As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON TAKE OFF ROLL , BLEEDS TRANSITIONED TO ENGINES, AT 60 KNOTS SMOKE FILLED COCKPIT AND CABIN. CAPTAIN ADVISED AS SOON AS BROUGHT THROTTLES BACK TO IDLE THE SMOKE DISSAPATED. CAPTAIN ALSO ADVISED HE COULD A RUMBLING NOISE AND AIRFLOW WAS WEAK. R & R THE AIR CYCLE MACHINE. OPS CHECKS SATISFACTORY AT THIS TIME.