The Cessna 182 Skylane is an American four-seat, single-engine, light airplane, built by Cessna of Wichita, Kansas. It has the option of adding two child seats, installed in the baggage area.
Introduced in 1956, the 182 has been produced in a number of variants, including a version with retractable landing gear, and is the second most popular Cessna model, after the 172.
The retractable gear R182 and TR182 were offered from 1978 to 1986, without and with engine turbocharging respectively. The model designation nomenclature differs from some other Cessna models with optional retractable gear. For instance the retractable version of the Cessna 172 was designated as the 172RG, whereas the retractable gear version of the Cessna 182 is the R182. Cessna gave the R182 the marketing name of "Skylane RG".
Source: Wikipedia, "Cessna 182", available under the CC-BY-SA License.