  We present a Chandra observation of SN 2016hnk, a candidate Ca-rich gap
transient. This observation was specifically designed to test whether or not
this transient was the result of the tidal detonation of a white dwarf by an
intermediate-mass black hole. Since we detect no X-ray emission 28 days after
the discovery of the transient, as predicted from fall-back accretion, we rule
out this model. Our upper limit of $\sim 10$ M$_\odot$ does not allow us to
rule out a neutron star or stellar-mass black hole detonator due limits on the
sensitivity of Chandra to soft X-rays and unconstrained variables tied to the
structure of super-Eddington accretion disks. Together with other Chandra and
multiwavelength observations, our analysis strongly argues against the
intermediate-mass black hole tidal detonation scenario for Ca-rich gap
transients more generally.
