Narrative:

At top of climb; the purser called to say that they had heard an unusual noise and buzzing coming from the overwing exit. I had not heard anything and had no unusual indications; so asked her to keep me informed. Approximately 20 mins later we received a call from the back saying that a flight attendant riding in the exit row wanted to send us a note. The note said; 'there is a piece of wing peeling off. It's about 1 1/2 ft long and 1 inch thick. More skin is loose (another 1 ft long).' we asked her to come to the cockpit where she gave us a more detailed description of what she observed. I then asked the first officer to go take a look. He came back with the same description. We discussed it and the prudent decision would be to divert to the nearest airport. We notified dispatch and diverted to atl. On the approach into atl; the purser called and said that a piece had fallen off. The approach and landing were uneventful. We flew this aircraft into rsw from ord the night before and there was nothing unusual noted with the airplane. The first officer said that the preflight walkaround was normal. Callback conversation with reporter revealed the following information: reporter advised the material was delaminating from an inboard slat.

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Original NASA ASRS Text

Title: B757-200 FLT CREW WAS ADVISED THAT COMPOSITE MATERIAL ON INBOARD WING SLAT WAS DELAMINATING. DELAMINATED AREA SEPARATED FROM ACFT JUST PRIOR TO LNDG AT DIVERSION STATION.

Narrative: AT TOP OF CLB; THE PURSER CALLED TO SAY THAT THEY HAD HEARD AN UNUSUAL NOISE AND BUZZING COMING FROM THE OVERWING EXIT. I HAD NOT HEARD ANYTHING AND HAD NO UNUSUAL INDICATIONS; SO ASKED HER TO KEEP ME INFORMED. APPROX 20 MINS LATER WE RECEIVED A CALL FROM THE BACK SAYING THAT A FLT ATTENDANT RIDING IN THE EXIT ROW WANTED TO SEND US A NOTE. THE NOTE SAID; 'THERE IS A PIECE OF WING PEELING OFF. IT'S ABOUT 1 1/2 FT LONG AND 1 INCH THICK. MORE SKIN IS LOOSE (ANOTHER 1 FT LONG).' WE ASKED HER TO COME TO THE COCKPIT WHERE SHE GAVE US A MORE DETAILED DESCRIPTION OF WHAT SHE OBSERVED. I THEN ASKED THE FO TO GO TAKE A LOOK. HE CAME BACK WITH THE SAME DESCRIPTION. WE DISCUSSED IT AND THE PRUDENT DECISION WOULD BE TO DIVERT TO THE NEAREST ARPT. WE NOTIFIED DISPATCH AND DIVERTED TO ATL. ON THE APCH INTO ATL; THE PURSER CALLED AND SAID THAT A PIECE HAD FALLEN OFF. THE APCH AND LNDG WERE UNEVENTFUL. WE FLEW THIS ACFT INTO RSW FROM ORD THE NIGHT BEFORE AND THERE WAS NOTHING UNUSUAL NOTED WITH THE AIRPLANE. THE FO SAID THAT THE PREFLT WALKAROUND WAS NORMAL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THE MATERIAL WAS DELAMINATING FROM AN INBOARD SLAT.

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.