TL* - THE CONTACT STATED THE HARNESS ON THE GRACO COMFORT SPORT MODEL # 8434PR6, MANUFACTURED 02/10/05 FAILED. THE CONTACT WAS INVOLVED IN A CAR CRASH ON 1/21/07 WHILE DRIVING 20 MPH, THE VEHICLE WAS HIT FROM BEHIND. THE SAFETY SEAT HARNESS CAME UNDONE AT IMPACT AND HIT THE PASSENGER IN THE HEAD, WHO WAS ALSO IN A CHILD SAFETY SEAT. THE PASSENGER WAS INJURED, BUT WAS NOT EJECTED FROM THE CHILD SAFETY SEAT. THE CONTACT HAS A POLICE AND EMS REPORT. *AK