Narrative:

Flight attendants #4, #7 and #8 in business class noticed that we were not gaining altitude as normally required after being in the air for approximately 8-10 mins. International relief officer came to area between zones B and C and inspected the right wing. We had noticed that the flap did not retract and told him so. He left, only to return approximately 3 mins later to check again. He then informed us that we would return to dfw and after landing, have right wing inspected. The captain made a PA to that effect. We turned around and landed without any problems. Aircraft taken OTS. We departed on different aircraft and had no additional problems.

Google
 

Original NASA ASRS Text

Title: FLT ATTENDANT RPT, B767-300ER, DFW-FRA, R WING DID NOT RETRACT, RETURN TO DFW. PLANE TAKEN OTS.

Narrative: FLT ATTENDANTS #4, #7 AND #8 IN BUSINESS CLASS NOTICED THAT WE WERE NOT GAINING ALT AS NORMALLY REQUIRED AFTER BEING IN THE AIR FOR APPROX 8-10 MINS. INTL RELIEF OFFICER CAME TO AREA BTWN ZONES B AND C AND INSPECTED THE R WING. WE HAD NOTICED THAT THE FLAP DID NOT RETRACT AND TOLD HIM SO. HE LEFT, ONLY TO RETURN APPROX 3 MINS LATER TO CHK AGAIN. HE THEN INFORMED US THAT WE WOULD RETURN TO DFW AND AFTER LNDG, HAVE R WING INSPECTED. THE CAPT MADE A PA TO THAT EFFECT. WE TURNED AROUND AND LANDED WITHOUT ANY PROBS. ACFT TAKEN OTS. WE DEPARTED ON DIFFERENT ACFT AND HAD NO ADDITIONAL 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.