20 C.F.R. § 228.13 Computation of the tier I annuity component of a parent's insurance annuity.
Title 20 - Employees' Benefits
The tier I annuity component of a parent's insurance annuity is dependent on whether one or two parents are entitled. (a) One parent entitled. A parent's tier I annuity component is equal to 82 (b) More than one parent entitled. A parent's tier I annuity component is equal to 75 percent of the PIA computed under §228.10 of this part. (c) The amounts computed under paragraph (a) or (b) of this section may be adjusted for the family maximum. See §228.14 of this part.
Title 20: Employees' Benefits
PART 228—COMPUTATION OF SURVIVOR ANNUITIES
Subpart B—The Tier I Annuity Component
§ 228.13 Computation of the tier I annuity component of a parent's insurance annuity.

