Appeals shall be filed with the retirement system manager, acting as secretary of the retirement hearing commission. An appeal shall be in writing and shall be filed not later than one hundred eighty (180) days following the date on which the decision of the retirement system manager from which appeal is taken became applicable pursuant to Section 2.124.2200 of this chapter. For purposes of Sections 2.124.2080 and 2.124.2100 of this chapter, the date on which the decision of the retirement system manager became applicable shall be the date upon which notice of the decision is mailed. No late appeal shall be considered in any case by the commission or a hearing officer. (Prior code § 34.14.1401)