Narrative:

After takeoff, while climbing, a very loud noise was heard on aircraft and felt vibration under my ft. Noise lasted about 30 seconds to 1 min. Passenger in first class also heard noise. I called via interphone to other flight attendants to find out if they also heard it. I immediately called cockpit to notify. I was informed we were having a mechanical problem, would be returning to ord and he would call me back. Second call told problem with nose gear or nose gear door to all flight attendants. No emergency preparation needed except to review '30 second review' before landing. Passenger then briefed by captain via PA. He did not anticipate 'problems.' upon landing, emergency crews (fire trucks, etc) met aircraft, pinned nosewheel, and we taxied to gate. All procedures followed.

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Original NASA ASRS Text

Title: AN MD80 CABIN CREW, DEPARTING ORD, EXPERIENCED A LOUD NOISE, FOLLOWED BY A VIBRATION UNDER FOOT. A RETURN TO ORD FOLLOWED.

Narrative: AFTER TKOF, WHILE CLBING, A VERY LOUD NOISE WAS HEARD ON ACFT AND FELT VIBRATION UNDER MY FT. NOISE LASTED ABOUT 30 SECONDS TO 1 MIN. PAX IN FIRST CLASS ALSO HEARD NOISE. I CALLED VIA INTERPHONE TO OTHER FLT ATTENDANTS TO FIND OUT IF THEY ALSO HEARD IT. I IMMEDIATELY CALLED COCKPIT TO NOTIFY. I WAS INFORMED WE WERE HAVING A MECHANICAL PROB, WOULD BE RETURNING TO ORD AND HE WOULD CALL ME BACK. SECOND CALL TOLD PROB WITH NOSE GEAR OR NOSE GEAR DOOR TO ALL FLT ATTENDANTS. NO EMER PREPARATION NEEDED EXCEPT TO REVIEW '30 SECOND REVIEW' BEFORE LNDG. PAX THEN BRIEFED BY CAPT VIA PA. HE DID NOT ANTICIPATE 'PROBS.' UPON LNDG, EMER CREWS (FIRE TRUCKS, ETC) MET ACFT, PINNED NOSEWHEEL, AND WE TAXIED TO GATE. ALL PROCS FOLLOWED.

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.