Ariz. Admin. Code § 11-2-801
A. Unless expressly defined in the Act or this Chapter, the terms used in this Article have the same meanings as understood pursuant to generally accepted accounting principles and practices.
B. In addition to the definitions provided in A.R.S. § 27-901, the following definitions apply to this Article:
"ICPA" means Independent Certified Public Accountant.
"Parent corporation" means a corporation which directly owns at least 50% of the voting stock of the corporation which is the owner or operator. Any latter corporation is considered a "subsidiary" of the parent corporation.
"Substantial business relationship" means the extent of a business relationship which is necessary, under applicable state law, to make a guarantee contract (issued on the basis of that relationship) valid and enforceable. A "substantial business relationship" shall arise from a pattern of recent or ongoing business transactions, so that a currently existing business relationship between guarantor and the owner or operator is shown to the satisfaction of the State Mine Inspector.
Ariz. Admin. Code § R11-2-801