17.1. Any member who has attained or attains age 60 years and has 10 or more years of credited service or attains age 62 years and has 5 or more years of credited service may retire upon his written application on filed with the Retirement Board setting forth at what time, not less than 30 days nor more than 90 days subsequent to the execution and filing thereof, he desires to be retired. Upon his retirement he shall receive a pension provided in Section 19.1.

17.2. Any member of the former system who has acquired or acquires 25 or more years of credited service pursuant to the provisions of this Article, may retire prior to his attainment of age 60 years upon his written application filed with the Retirement Board setting forth at what time, not less than 30 days nor more than 90 days subsequent to the execution and filing thereof, he desires to be retired. If the member of the former system has attained age 55 years he may use both credited service and non-contributory service for the exclusive purpose of satisfying the 25 years required of the preceding service. Upon his retirement he shall receive a pension provided in Section 19.1.

17.3. Any Tier 1 Member whose age and years of service, when added, equals 80 or more may retire upon the member’s written application filed with the Retirement Board setting forth the date the member desires to be retired. Any Tier 2 Member or Tier 3 Member whose age and years of service, when added, equals 87 or more may retire upon the member’s written application filed with the Retirement Board setting forth the date the member desires to be retired. Upon retirement, the member shall be paid the pension provided in Section 19.1.