The incredibly popular PA-28 Cherokee line was launched in 1961, but the 180 horsepower engine was not introduced until the 1963 models. This configuration was later to become the Piper PA-28-180 and PA-28-181 Archer. While the Cherokee 180 model underwent various upgrades through the years, its basic design has remained remarkably unchanged — a tribute to the early engineers. The photo gallery highlights a few of the major changes made to the Piper Archer and its predecessors.