What was found
(CAN) DURING A ROUTINE 300 INSP ON THE AIRFRAME, A CRACK WAS NOTED ON UPPER AFT SECTION OF THE SEAT WEB ASSY. THIS AREA IS PRONE TO STRESS AND CRACKS WHEN THE SEAT PANEL (THAT IS ATTACHED TO IT) IS REMOVED, AND NO SUPPORT IS ADDED TO THE TOP OF THIS WEB ASSY. PEOPLE TEND TO LEAN OVER THIS AREA, PUTTING THEIR HANDS ON THE TOP OF THE WEB AND THE WEB ENDS UP SUPPORTED THE PERSONS WEIGHT. THIS IS THE PROBABLE CAUSE OF THE CRACK, WHICH CAN HAPPEN OVER TIME. THE WEB ASSY WAS REPLACED WITH A NEW PIECE, AND THE AIRCRAFT WAS RETURNED TO SERVICE. (TC NR 20060605006)