Section 33.47 - Limitations(a) The notice of hearing with respect to a claim or statement must be served in the manner specified in § 33.8 within six years after the date on which the claim or statement is made.(b) If the defendant fails to file a timely answer, service of a notice under § 33.10(b) is deemed a notice of hearing for purposes of this section.(c) The statute of limitations may be extended by agreement of the parties. Authority: 31 U.S.C. 3808