On April 2, 1994, about 1217 eastern standard time, a Piper PA-44-180, N8303G, registered to and operated by Phoenix East Aviation, Inc., was substantially damaged while landing at the Flagler County Airport, Bunnell, Florida, while on a 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The certified flight instructor (CFI), pilot-rated student, and observer were not injured. The flight originated from the Daytona Beach Regional Airport, Daytona Beach, Florida, about 1030. The CFI stated that after departure the student performed airwork then a full stop landing at the Flagler County Airport. During the upwind leg the CFI pulled the left engine mixture control to the cutoff position. The flight turned downwind then base during which the CFI feather the left engine propeller. The airplane turned final and during the flare for landing, the pilot of another airplane in the traffic pattern advised the flight that the landing gear was not extended. The student lowered the landing gear selector handle and the CFI applied full throttle on the right engine. The airplane rolled to the left and impacted the ground left wing low followed by the nose and right wing, coming to rest upright. Postaccident examination of the airplane by FAA certificated A & P mechanic revealed that the landing gear warning horn operated normally.