The Washington Petition To Open Trust File is a petition to the Superior Court of Washington State to allow for the examination of a trust's documents. It is used to request that a court order the trustee of the trust to disclose documents related to the trust, such as the trust deed, inventory of assets, and other documents related to the trust. This petition is typically used when there is disagreement between the trustee and the beneficiaries, when a beneficiary wishes to inspect the trust documents, or when the trust has been inactive for a long period of time. The two main types of Washington Petition To Open Trust File are the Petition for Examination of Trust Documents and the Petition for Appointment of Successor Trustee. The Petition for Examination of Trust Documents is used when a beneficiary or other person with an interest in the trust wishes to view the trust documents. The Petition for Appointment of Successor Trustee is used when the current trustee is unable to serve, or if a successor trustee is needed to take over the duties and responsibilities of the trust.