Narrative:

Flaps failed to retract from takeoff (15 degrees). Return to sfo made overweight landing.

Google
 

Original NASA ASRS Text

Title: FLAPS FAILED TO RETRACT AFTER TKOF.

Narrative: FLAPS FAILED TO RETRACT FROM TKOF (15 DEGS). RETURN TO SFO MADE OVERWT LNDG.

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.