How about this for a challenging design concept? Start with a two-seat speedster with fighter-like handling, slow it down to meet the LSA 120-knot speed limit without excising any of the structure necessary for the stresses of the higher speed, then jump through the ASTM hoops to turn it into a production machine. That is exactly what Arion Aircraft did with its Lightning LS-1, an LSA that is finger-on-the trigger responsive in flight and among the fastest LSAs out there.

The Lightning is one of the few LSAs that is not intended to be used as a primary trainer. “Although a very few buyers have learned to fly in their Lightnings, we did not design it for flight training,” explained Arion’s Nick Otterbach, one of the lead designers of the airplane.