United States v. Camacho, ___F.3d___ (9th Cir. August 15, 2003) (failure to appear is a continuing offense as long as the defendant remains at large. As defendant was captured after the sentencing guidelines became effective, the district court erred by failing to sentence defendant under the U.S.S.G. following his guilty plea to one count of failure to appear, in violation of 18 U.S.C. 3146).
http://caselaw.lp.findlaw.com/data2/circs/9th/0250447p.pdf