We’re still collecting data for this aircraft. Routes appear once we’ve seen it fly enough times.
The pilot's failure to maintain adequate airspeed (Vmc) which resulted in a loss of control. Contributing factors were the improper in-flight planning/decision not to land at a closer airport and the lack of recent experience in multiengine airplanes by the pilot-in-command, the cylinder head separation, the inadequate manufacturing process, and the lack of continued airworthiness instructions relating to the Riley Super-8 STC.
Cessna 414 RILEY SUPER-8 · 3 fatalities