ROOF HATCHES MAY BE PROPPED OPEN TO ALLOW FOR FRESH AIR VENTILLATION. THE PROP MECHANISM WAS DESIGNED TO DISENGAGE WHEN FULL OPENING OF THE HATCH IS REQUIRED TO EXIT. THE RELEASE BUTTON THAT DISENGAGES THE PROP MECHANISM MAY REQUIRE EXCESSIVE FORCE TO RELEASE, WHICH FAILS TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 217, "BUS WINDOW RETENTION AND RELEASE".
NEWLY DESIGNED PROP MECHANISM WILL BE INSTALLED TO REPLACE EXISTING PROP MECHANISMS. PARTS WILL BE SUPPLIED AT NO CHARGE AND LABOR WILL BE REIMBURSED.
VEHICLE DESCRIPTION: INTERCITY BUSES.SYSTEM: STRUCTURE; ROOF EMERGENCY EXITS.CONSEQUENCES OF DEFECT: IN THE EVENT OF AN EMERGENCY, SAFE EXIT FROM THEVEHICLE MAY BE IMPEDED. THERE IS INCREASED RISK OF PASSENGER INJURY IFEMERGENCY EXIT THROUGH THE ROOF HATCHES IS REQUIRED.