CERTAIN RICON “S” AND “K” SERIES PLATFORM STYLE WHEELCHAIR LIFTS, MANUFACTURED BETWEEN APRIL 1, 2005, AND SEPTEMBER 6, 2006, INSTALLED AS ORIGINAL EQUIPMENT ON CERTAIN SPECIALTY VEHICLES. 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.