Where:
T = most recently completed fiscal year.
APT = total amortization payment for fiscal year T.
TRT = total revenue in fiscal year T.
PARAT = previously authorized retirement obligation rate authority, compounded through fiscal year T, expressed as a proportion of the market dominant rate base and calculated using the formula in paragraph (a)(2) of this section as described in paragraph (b)(2) of this section.
N = number of previously issued determinations in which retirement obligation rate authority was made available under this subpart.
Where:
T = most recently completed fiscal year.
rt = retirement obligation rate authority authorized in fiscal year T.
N = number of previously issued determinations in which retirement obligation rate authority was made available under this subpart.
39 C.F.R. §3030.183