Narrative:

Smelled/saw smoke after takeoff. Flight attendant called and reported same in cabin. Previous write-up led us to believe problem was associated with packs. Declared emergency and diverted to ewr. Smoke removal checklist completed during descent cleared smoke. Aircraft supply switches turned off. Were cleared to turn from west heading and 9000 ft to 190 degrees and 4000 ft. During descent, received TCASII RA requiring climb. As soon as corrective action was started, RA stopped. Aircraft indicated 2.5 mi and 300 ft off our right side. Continued descent and vectored to runway 22R ewr. Landed at 131500 pounds (overweight). While taxiing, flight attendant reported passenger had been given walkaround oxygen bottle after she began having difficulty breathing. I requested that paramedics meet us at gate, which they did promptly. APU was not started due to nature of previous write-up and no need for packs. Flight attendant reported passenger very nervous during event probably due to smoke and unexpected descent over nyc.

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Original NASA ASRS Text

Title: AN MD80 CREW, DURING CLB OUT OF LGA, EXPERIENCED SMOKE IN THE COCKPIT AND CABIN. DIVERTED TO EWR.

Narrative: SMELLED/SAW SMOKE AFTER TKOF. FLT ATTENDANT CALLED AND RPTED SAME IN CABIN. PREVIOUS WRITE-UP LED US TO BELIEVE PROB WAS ASSOCIATED WITH PACKS. DECLARED EMER AND DIVERTED TO EWR. SMOKE REMOVAL CHKLIST COMPLETED DURING DSCNT CLRED SMOKE. ACFT SUPPLY SWITCHES TURNED OFF. WERE CLRED TO TURN FROM W HDG AND 9000 FT TO 190 DEGS AND 4000 FT. DURING DSCNT, RECEIVED TCASII RA REQUIRING CLB. AS SOON AS CORRECTIVE ACTION WAS STARTED, RA STOPPED. ACFT INDICATED 2.5 MI AND 300 FT OFF OUR R SIDE. CONTINUED DSCNT AND VECTORED TO RWY 22R EWR. LANDED AT 131500 LBS (OVERWT). WHILE TAXIING, FLT ATTENDANT RPTED PAX HAD BEEN GIVEN WALKAROUND OXYGEN BOTTLE AFTER SHE BEGAN HAVING DIFFICULTY BREATHING. I REQUESTED THAT PARAMEDICS MEET US AT GATE, WHICH THEY DID PROMPTLY. APU WAS NOT STARTED DUE TO NATURE OF PREVIOUS WRITE-UP AND NO NEED FOR PACKS. FLT ATTENDANT RPTED PAX VERY NERVOUS DURING EVENT PROBABLY DUE TO SMOKE AND UNEXPECTED DSCNT OVER NYC.

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.