As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PUFFS OF WHITE SMOKE FROM THE LEFT SIDE OF THE NOSE DURING TAXI OUT. OBSERVED SEVERAL TIMES AND APPEARED MORE THAN USUAL. INSPECTED LEFT SIDE AREA WHERE WHITE SMOKE WAS OBSERVED. NO ANOMALIES FOUND. POSSIBLE WATER VAPOR COMING FROM TOTAL AIR TEMP PROBE. PEFORMED OPS TEST IN REF AMM 30-33-00-001. OPS TEST PASSED. OK FOR SERVICE