SUMMARY:SCHOOL DISTRICT REPORTS EXTENDED SEAT BACKS ARE BREAKING AWAYFROM THE SEATS SOLID FRAME.SEAT BACK SEPARATION COULD HAVE A DETRIMENTALEFFECT ON THE VEHICLES COMPARTMENTALIZATION PRINCIPLE IN THE EVENT OF ASERIOUS ACCIDENT.COMPARTMENTALIZATION, AS OUTLINED IN THE STANDARD, REQUIRES STRENGTH INTHE ENTIRE SEATING SYSTEM WHICH INCLUDES THE FLOOR, THE SEAT FRAME ANDTHE FASTENING OF THE FRAMES TO THE FLOOR WHILE AT THE SAME TIME PROVIDINGSEAT SYSTEM PADDING AND FLEXIBILITY TO ABSORB ENERGY IN A CRASH.===