B REAKING OUNDARIES Sling TSi is a turbocharged, efficient four-seater B Y D AV E H I R S C H M A N P H OT O G R A P H Y B Y C H A D S L AT T E R Y Catalina Island is 20 miles away, yet on this crisp and brilliantly clear morning, its rocky, steep-sided hills appear almost close enough to touch. 72 | AOPA PILOT July 2019