NAVISTAR IS RECALLING 1,607 MY 2007 THROUGH 2009 IC BESB, CESB, FESB, AND RESB SCHOOL BUSES MANUFACTURED FROM JANUARY 4, 2006 THROUGH NOVEMBER 15, 2007, EQUIPPED WITH RICON S OR K SERIES WHEELCHAIR LIFTS. THE ANTI-STOW INTERLOCK MAY NOT DETECT THE PRESENCE OF A WHEELCHAIR OR MOBILITY AID USER. THE PRESSURE SENSING SWITCH THAT DETECTS THE PRESENCE OF WEIGHT ON THE PLATFORM WAS NOT ADJUSTED TO THE NECESSARY SENSITIVITY LEVEL. THE LIFT COULD STOW EVEN THOUGH SOMEONE OR SOMETHING IS STILL ON THE LIFT WHICH FAILS TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 403, “PLATFORM LIFT SYSTEMS FOR MOTOR VEHICLES.”