Mr. Leffe has several areas of expertise. He is court qualified to testify in: Aviation, Architecture, Winter Sports & Firearms.
Aviation accident investigation & reconstruction, piloting, propeller analysis, flight path reconstruction, general aviation & experimental aircraft.
Snow Skiing accident investigation & reconstruction. chair lift safety, slope safety, snowboarding & other winter sports.
Architecture, Construction defects. Slip and fall, stair defects & Americans with Disabilities Act.
Hunting and guns with a focus on african hunting and double rifles.
