What Even Is A “High-Performance”Airplane?

Our quest for the definition was problematic. It became enlightening.

High-Performance Airplanes
The Piper Comanche was the first in the next wave of high-performance four- to six-seat singles. The plane was produced through 1972, when a hurricane destroyed the tooling for the model and Piper decided to discontinue it.
Gemini Sparkle

Key Takeaways:

  • The article challenges the long-standing difficulty in defining "high-performance single" aircraft, criticizing the FAA's problematic and outdated definition based solely on horsepower.
  • It argues that horsepower alone is an inadequate metric for performance, as it doesn't necessarily equate to speed or payload capability.
  • Ultimately, the authors adopted a new approach, defining high-performance aircraft based on how pilots regard them, allowing for flexibility on features like retractable gear and evaluating horsepower in relation to the aircraft's overall delivered performance.
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As we selected the aircraft we’d choose to feature earlier this month, we were greeted with a seemingly endless chain of questions, one often leading quite unexpectedly to the next. What planes were worthy of being a part of this conversation? What features did they need to possess? Was retractable gear a necessity? Was its lack disqualifying? Could we even create a single test of what constitutes a high-performance single, as the FAA has unsuccessfully attempted to do for more than six decades now by yoking the concept to horsepower?

That rubric is to equate performance with power, a test that the FAA has saddled itself and us with ever since. And the more we thought about it, the more problematic the idea became. After all, pure cubic centimeters don’t equal speed, or even necessarily payload power. Besides, if the FAA’s 200/201-hp threshold was problematic, how could we hope to do better by choosing a different number? But how low-powered an engine could a “high-performance” aircraft have and still be classified as such? We had no idea, because the idea wasn’t a defining principle to begin with.

Ultimately, we decided instead to focus on how pilots regarded these aircraft, because that answered all of our questions in one elegant way (one that admittedly doesn’t lend itself to regulatory definitions). So, according to this new approach, retractable gear is an optional feature on high-performance planes, at least according to pilots starting in around the year 2000, when the Cirrus SR lineup started changing minds in a big way. In the same vein, any horsepower figure is seen in relation to what level of performance it, along with the airframe it’s mated to, can deliver to the end vision.

Six Modern High-Performance Piston Singles

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