CONTENTS AOPA PILOT May 2013 | Volume 56 | Number 5 | www.aopa.org/pilot 60 General Electric’s H80 Turboprop: Czechered Past A rugged turbine is made even better. By Dave Hirschman ON THIS PAGE: Chris Rose photographed this Thrush 510G ag plane with its GE H80 engine near Albany, Georgia, to accompany Dave Hirschman’s story. FEATURES 44 54 Useful-load increase amps Cirrus SR22 utility. Indiana high school kids fly the airplane they built. More of a Good Thing By Thomas B. Haines Pulling Together By Dave Hirschman 68 74 This Mooney is Out of Air Fly Off: A Tale of Two Biplanes A Mooney M20J goes all electric. An aerial drag race between a couple of classics. By Ian J. Twombly By Dave Hirschman www.aopa.org/pilot AOPA PILOT | 1http://www.aopa.org/pilot http://www.aopa.org/pilot