Except as noted in this paragraph, an individual whose rights or interests under FERS are affected by a final decision of OPM may request MSPB to review the decision in accord with procedures prescribed by MSPB. Decisions made in accord with the procedures referenced in Sec. 841.306(b)(1) are made under subchapter II of chapter 83, title 5, United States Code. Such decisions are not appealable to MSPB under section 8461(e) of title 5, United States Code.