DT*: THE CONTACT STATED WHILE PULLING THE 5TH WHEEL TRAILER 20 MPH, THE PIN BOX SHEERED. AS A RESULT THE TRAILER COLLAPSED ONTO THE TRUCK AND CAUSED A SEPARATION BETWEEN THE TRAILER AND THE TRUCK. BOTH THE TRAILER AND TRUCK SUSTAINED SIGNIFICANT DAMAGE; HOWEVER NO INJURIES OCCURRED. THE TRAILER WAS TOWED TO AN INDEPENDENT REPAIR SHOP, REPAIRS WERE MADE. THE MANUFACTURER WAS ALERTED. UPDATED 3/28/2006 - *NM