Whenever a beneficiary of the Tennessee teachers' retirement system and the Tennessee state retirement system shall have been retired under a ten-year arithmetic average, the beneficiary shall have such beneficiary's benefits recomputed under a five-year arithmetic average. The recomputation shall be under the benefit provisions of the applicable superseded system.
Recomputation of benefits of beneficiaries of state and teachers' superseded systems who were retired under ten-year arithmetic average
Tenn. Code Ann. § 8-36-703, under Increased or Decreased Allowances.
Tenn. Code Ann. § 8-36-703