Narrative:

Upon reaching 31000 ft, smelled smoke. Contacted lead flight attendant to ask if there was smoke in cabin. Odor subsided in cockpit. Mins later smoke was pouring out of captain's side panel and floor. Both pilots donn oxygen masks and smoke goggles. Declared emergency. Requested diversion to cle. Flight attendant notified of diversion and company notified. Told ATC fuel and number of passenger onboard. At the same time accomplished immediate action items on QRH, then continued QRH procedures. Smoke continued until landing. Safe landing. Smoke subsided on rollout. Cleared runway. No further smoke or fire indicated. Advised passenger to remain seated. Taxied to gate and deplaned passenger. No crew or passenger injuries. Supplemental information from acn 538507: upon reaching 31000 ft, the captain smelled smoke, contacted lead flight attendant to ask if they smelled smoke or see anything in cabin. Odor subsided, a few mins later captain indicated/observed smoke pouring from area by his left knee. We both donned smoke goggles and oxygen masks. With direction from captain, declared emergency/mayday and diverted to cle. Flight attendants notified of time remaining, nature of emergency, instructions, etc, company and operations in cle notified. ATC advised of number of passenger and fuel onboard. While this was going on, we accomplished emergency checklists and completed QRH items. Smoke continued until landing. Safe landing and smoke subsided on rollout, cleared runway and after further observations by crew and fire personnel, taxied and deplaned passenger at gate. No crew or passenger injured. Possible cause: older wiring in an older B757 than most.

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Original NASA ASRS Text

Title: B757-200 CREW HAD SMOKE IN THE COCKPIT IN ZOB CLASS A.

Narrative: UPON REACHING 31000 FT, SMELLED SMOKE. CONTACTED LEAD FLT ATTENDANT TO ASK IF THERE WAS SMOKE IN CABIN. ODOR SUBSIDED IN COCKPIT. MINS LATER SMOKE WAS POURING OUT OF CAPT'S SIDE PANEL AND FLOOR. BOTH PLTS DONN OXYGEN MASKS AND SMOKE GOGGLES. DECLARED EMER. REQUESTED DIVERSION TO CLE. FLT ATTENDANT NOTIFIED OF DIVERSION AND COMPANY NOTIFIED. TOLD ATC FUEL AND NUMBER OF PAX ONBOARD. AT THE SAME TIME ACCOMPLISHED IMMEDIATE ACTION ITEMS ON QRH, THEN CONTINUED QRH PROCS. SMOKE CONTINUED UNTIL LNDG. SAFE LNDG. SMOKE SUBSIDED ON ROLLOUT. CLRED RWY. NO FURTHER SMOKE OR FIRE INDICATED. ADVISED PAX TO REMAIN SEATED. TAXIED TO GATE AND DEPLANED PAX. NO CREW OR PAX INJURIES. SUPPLEMENTAL INFO FROM ACN 538507: UPON REACHING 31000 FT, THE CAPT SMELLED SMOKE, CONTACTED LEAD FLT ATTENDANT TO ASK IF THEY SMELLED SMOKE OR SEE ANYTHING IN CABIN. ODOR SUBSIDED, A FEW MINS LATER CAPT INDICATED/OBSERVED SMOKE POURING FROM AREA BY HIS L KNEE. WE BOTH DONNED SMOKE GOGGLES AND OXYGEN MASKS. WITH DIRECTION FROM CAPT, DECLARED EMER/MAYDAY AND DIVERTED TO CLE. FLT ATTENDANTS NOTIFIED OF TIME REMAINING, NATURE OF EMER, INSTRUCTIONS, ETC, COMPANY AND OPS IN CLE NOTIFIED. ATC ADVISED OF NUMBER OF PAX AND FUEL ONBOARD. WHILE THIS WAS GOING ON, WE ACCOMPLISHED EMER CHKLISTS AND COMPLETED QRH ITEMS. SMOKE CONTINUED UNTIL LNDG. SAFE LNDG AND SMOKE SUBSIDED ON ROLLOUT, CLRED RWY AND AFTER FURTHER OBSERVATIONS BY CREW AND FIRE PERSONNEL, TAXIED AND DEPLANED PAX AT GATE. NO CREW OR PAX INJURED. POSSIBLE CAUSE: OLDER WIRING IN AN OLDER B757 THAN MOST.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.