Cessna Model 172 Series aircraft, described in this manual, are high-wing monoplanes of all-metal, semiconscious construction. These aircraft are equipped with a fixed tricycle landing gear. Tru 1970 Models, they are equipped with flat spring-steel main landing gear struts. Beginning with 1971 Models, these aircraft are equipped with tubular spring-steel main gear struts.
Cessna 100 Series Manual, Cessna 172 Series
Cessna 172 and Skyhawk Series 1969 thru 1976 Service Manual
change 3 : 15 June 1975