As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SWITCHED BLEEDS TO THE ENGINE AND HAD A BURNING ODOR WITH ASSOCIATED LIGHT SMOKE ENTERING THE COCKPIT AND CABIN. DECLARED AN EMERGENCY, RAN QRH. SMOKE SEEMED TO STOP AFTER ABOUT TWO MINUTES ON THE ENGINE BLEED. PERFORMED OPS CHECK IAW AMM. NO FAULTS NOTED. NO SMOKE DETECTED. NO SMOKE IN CABIN OR COCKPIT WITH TAKEOFF POWER WITH APU OR WITH ENG BLEED AIR.