Bill of Sale ; Library File Link. Seller Name (first, middle, last, suffix).An Arizona trailer bill of sale is a document that records the transfer of ownership of carrying platforms within the state. An Arizona bill of sale allows for the ownership transfer of personal property. The Trailer is to be sold free and clear of any liens, encumbrances, or mortgages. The bill of sale is only for the transfer of a trailer only and any other item(s) must be declared in writing or in another form. It's a good idea to get a bill of sale if you intend to buy or sell an RV. This formal document serves as proof of ownership change from seller to buyer. This blank motion form should not be used to start a court case. If you do not use the correct form, a judge or court commissioner may deny the motion. Fill out the form below to submit for reimbursement.