All required fields must be filled out and the form needs to be signed. General affidavit form for use within the State of Washington.Modify this affidavit to meet your specific needs. This procedure allows someone legally entitled to inherit a decedent's personal property to get that property without going through probate. Free printable affidavit forms available at . How to fill out the Washington State Affidavit of Loss Form Instructions? 1. Gather the required information, including license number and VIN. 2. The only form on this website legally requiring the use of an Affidavit is the Oath of Personal Representative. This portion of the simple will-drafting instructions explains how to format the signature lines and affidavit of your simple will. Edit, sign, and share washington affidavit form online.