Sec. 1. (a) As used in this section, "child" or "stepchild" includes a child or stepchild of any age.
(b) The owner, operator, or person responsible for the operation of an aircraft is not liable for loss or damage arising from injuries to or the death of his:
(1) parent;
(2) spouse;
(3) child or stepchild;
(4) brother; or
(5) sister;
resulting from the operation of the aircraft while the parent, spouse, child or stepchild, brother, or sister was being transported without payment therefor in the aircraft, unless the injuries or death are caused by the wanton or willful misconduct of the operator, owner, or person responsible for the operation of the aircraft.