On May 11, 2025, about 1231 central daylight time, a Piper PA46-350P, N253MA, sustained substantial damage when it was involved in an accident near Greenwood, Indiana. The pilot and passenger received serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight. The pilot reported that the airplane had been converted from the original piston engine to a Pratt & Whitney PT6A-35 turbo-propeller engine installation. The pilot reported that the engine started normally, but when he advanced the throttle lever to taxi, the power did not increase. He allowed the engine to run for a time and made another attempt to taxi and the engine responded normally. The pilot stated that the pre-takeoff engine and propeller checks were normal, and he proceeded to takeoff on runway 1 at the Indy South Greenwood Airport (HFY). The airplane accelerated to 80 knots, and the pilot rotated the airplane to takeoff. He reported that when the airplane was about 100 ft agl, the engine lost all power, and he instinctively advanced the throttle lever with no resulting increase in power. The airplane impacted a taxiway on the west side of the runway and slid to a stop, striking an embankment during the impact sequence. The airplane received substantial damage to the fuselage.