What does SR stand for on Cirrus Aircraft?

What’s the lexicon for “SR” in the Cirrus Aircraft model name? The SR was chosen as an acronym for Single-engine Reciprocating piston airplane. In 1999, the first Cirrus certified airplane was the SR20 and the number 20 stands for the original 200 horse power Teledyne Continental Motor engine.

In 2001, the second certified Cirrus airplane was introduced as the SR22 and received a “22” designation because it was just the next model up in engine performance and capability.

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