Narrative:

Our flight was departing ZZZ-ZZZ1. Taxied to assigned runway 12R for takeoff. It was the captain's leg to fly the aircraft. After takeoff and during the initial climb segment; approximately 600 ft AGL; the flight attendants called on the interphone and said that 'smoke was filling the cabin' and it was hard to breathe. At 1000 ft AGL the captain said 'you have the aircraft and radios; I'll handle the problem.' so I flew the aircraft and declared an emergency and stated that we wanted to return to ZZZ. We donned the oxygen masks and the captain coordination with the flight attendants the emergency; while I flew and asked for the crash trucks to roll. ZZZ departure was very busy but very helpful. He gave us vectors for runway 12R for landing. While on a base leg; the captain took back the aircraft to fly; called for descent and approach checks; and we landed on runway 12R without a mishap. After clearing the runway; the crash fire rescue equipment communicated with us that no fire or smoke was seen or detected. We had 2 trucks follow us to the gate.

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Original NASA ASRS Text

Title: A DC9-30 ON TKOF CLB AT 600 FT DECLARED AN EMER AND RETURNED TO DEP ARPT DUE TO SMOKE IN THE CABIN. CAUSE UNKNOWN.

Narrative: OUR FLT WAS DEPARTING ZZZ-ZZZ1. TAXIED TO ASSIGNED RWY 12R FOR TKOF. IT WAS THE CAPT'S LEG TO FLY THE ACFT. AFTER TKOF AND DURING THE INITIAL CLB SEGMENT; APPROX 600 FT AGL; THE FLT ATTENDANTS CALLED ON THE INTERPHONE AND SAID THAT 'SMOKE WAS FILLING THE CABIN' AND IT WAS HARD TO BREATHE. AT 1000 FT AGL THE CAPT SAID 'YOU HAVE THE ACFT AND RADIOS; I'LL HANDLE THE PROB.' SO I FLEW THE ACFT AND DECLARED AN EMER AND STATED THAT WE WANTED TO RETURN TO ZZZ. WE DONNED THE OXYGEN MASKS AND THE CAPT COORD WITH THE FLT ATTENDANTS THE EMER; WHILE I FLEW AND ASKED FOR THE CRASH TRUCKS TO ROLL. ZZZ DEP WAS VERY BUSY BUT VERY HELPFUL. HE GAVE US VECTORS FOR RWY 12R FOR LNDG. WHILE ON A BASE LEG; THE CAPT TOOK BACK THE ACFT TO FLY; CALLED FOR DSCNT AND APCH CHKS; AND WE LANDED ON RWY 12R WITHOUT A MISHAP. AFTER CLRING THE RWY; THE CFR COMMUNICATED WITH US THAT NO FIRE OR SMOKE WAS SEEN OR DETECTED. WE HAD 2 TRUCKS FOLLOW US TO THE GATE.

Data retrieved from NASA's ASRS site as of January 2009 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.