than the global conserved charges. For example, restricting attention to static solutions, Gibbons [*et al.*]{} [@shiromizu] showed that the only asymptotically flat, static vacuum black hole is the Schwarzschild-Tangherlini solution [@T-schwarzschild]. For rotating case, by assuming the existence of two axial Killing symmetries and spherical topology of the event horizon, Morisawa and Ida [@MI] succeeded in proving that five-dimensional asymptotically flat, stationary vacuum rotating black holes must be in the Myers-Perry family. Their theorem was recently generalized to a class of asymptotically flat solutions with non-spherical horizon topology [@Hollands; @MTY]. For other cases (such as cases including Maxwell-field), see [@HY; @R; @R2; @R3; @R4; @R5; @R6; @R7; @HY08].

In this paper, we generalize the boundary value analysis of Morisawa and Ida [@MI] performed in vacuum Einstein gravity to the case of the bosonic sector of five-dimensional minimal supergravity. We are concerned with stationary black hole spacetimes that are asymptotically flat in the standard sense: Namely, we demand that the exterior region of the black hole is globally hyperbolic, having a spherical spatial infinity, and that the metric and other physical fields, such as Maxwell field, fall-off in a certain manner at large distances. (The asymptotic fall-off conditions are given later.) 