Versions of Iowa Code 279.19 - Probationary period on LawServer 2023 Iowa Code 279.19 – Probationary period 2022 Iowa Code 279.19 – Probationary period 2020 Iowa Code 279.19 – Probationary period 2018 Iowa Code 279.19 – Probationary period 2016 Iowa Code 279.19 – Probationary period 2014 Iowa Code 279.19 – Probationary period. 2009 Iowa Code 279.19 – Probationary period