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The original Cessna 172 was first flown in 1955. Since the first production models, there have been several upgrades and variations of the original design, indicated by letters following the model number. Various changes in design, like the swept back tail fin introduced in the 1960 model 172 A, or the change from Continental engines to Lycoming in 1968 (the 172 I) are indicated by the letter after the numbers. Current production models introduced in 1998 are 172 S.

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10y ago

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