Ind. Code § 6-1.1-12.3-14
The deduction applies to ad valorem property taxes calculated using aircraft ground times. The amount of a deduction available under section 12 or 13 of this chapter is equal to the product of:
(2) with respect to the ground time determined for purposes of calculating ad valorem property taxes for the aircraft, the quotient of:
As added by P.L.224-2003, SEC.279.