![The 160 hp turbocharged Rotax 916iS is a four-stroke piston engine with redundant electronic fuel injection and ignition. [Credit: BPR Rotax]](https://www.kitplanes.com/wp-content/uploads/2026/05/PIC_916-iS_iSc-2.jpg?w=534&h=462&crop=1 "2026 Engine Buyer’s Guide")
In Case You Missed It
Editor’s Log
The FAA’s concerns about the issuance of Special Airworthiness Certificates for some factory-built Light Sport Aircraft may result in changes to ELSA as well. By Editor-in-Chief Mary Bernard.
Wind Tunnel
Increasing the weight of an aircraft will affect its performance in all phases of flight.
