In general
If section 1250 property is disposed of after December 31, 1975 , then the applicable percentage of the lower of—
(i)#
that portion of the additional depreciation (as defined in subsection (b)(1) or (4)) attributable to periods after December 31, 1975 , in respect of the property, or
(ii)#
the excess of the amount realized (in the case of a sale, exchange, or involuntary conversion), or the fair market value of such property (in the case of any other disposition), over the adjusted basis of such property,
shall be treated as gain which is ordinary income. Such gain shall be recognized notwithstanding any other provision of this subtitle.