Narrative:

The captain did the preflight inspection and saw nothing irregular. We did a flex 52 takeoff on runway 27R (operations normal). We started a turn to 250 degrees at the MM, per ATC. About that time the lead flight attendant called to tell us a passenger saw something come off the #1 engine. We had no cockpit indications of a problem. The lead flight attendant was told to look and verify there were some parts coming off the engine. While waiting for a report back, we felt the airplane shudder. We told ATC we wanted to return to atl for landing. During this time the #1 engine instruments flashed amber xx's and went back to normal. The #1 engine oil quantity remained xx, however. We declared an emergency and landed without any more problems.

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Original NASA ASRS Text

Title: AN A320 FO RPTED THAT AN OBSERVANT PAX ALERTED THE #1 FLT ATTENDANT TO DEBRIS FALLING FROM THE L ENG AND THAT THE RESULTING ENG INDICATIONS PROMPTED THE CAPT TO DECLARE AN EMER AND RETURN LAND ATL.

Narrative: THE CAPT DID THE PREFLT INSPECTION AND SAW NOTHING IRREGULAR. WE DID A FLEX 52 TKOF ON RWY 27R (OPS NORMAL). WE STARTED A TURN TO 250 DEGS AT THE MM, PER ATC. ABOUT THAT TIME THE LEAD FLT ATTENDANT CALLED TO TELL US A PAX SAW SOMETHING COME OFF THE #1 ENG. WE HAD NO COCKPIT INDICATIONS OF A PROB. THE LEAD FLT ATTENDANT WAS TOLD TO LOOK AND VERIFY THERE WERE SOME PARTS COMING OFF THE ENG. WHILE WAITING FOR A RPT BACK, WE FELT THE AIRPLANE SHUDDER. WE TOLD ATC WE WANTED TO RETURN TO ATL FOR LNDG. DURING THIS TIME THE #1 ENG INSTS FLASHED AMBER XX'S AND WENT BACK TO NORMAL. THE #1 ENG OIL QUANTITY REMAINED XX, HOWEVER. WE DECLARED AN EMER AND LANDED WITHOUT ANY MORE PROBS.

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.