Wing Leading Edges Exhibited Minor Impact Marks From Exiting Engine Debris

Location: Rochester, MN Incident Number: ENG23LA034
Date & Time: July 20, 2023, 14:42 Local Registration: N707MM
Aircraft: Hall Lester R Legacy Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Air race/show

On July 20, 2023, at about 1:42pm local time, a Lancair Legacy airplane, registration number, N707NM, powered by a single Pratt & Whiteny Canada PT6A-42 turbopropeller engine experienced an uncontained engine failure while enroute from the Rapid City Regional Airport (KRAP), South Dakota to the Rochester International Airport (KRST), Minnesota. The pilot declared an emergency, started a gliding descent into KRST, and made a successful landing without power. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 flight. The pilot and passenger reported no injuries. Post inspection of the airplane and engine by a local Federal Aviation Administration inspector revealed an exit hole in the engine, all the power turbine stage 2 blades were fractured near the blade platform, the inside of the exhaust ducts exhibited impacts marks from the released power turbine blades, and the wing leading edges exhibited minor impact marks from exiting engine debris.

FMI: www.ntsb.gov