Beechcraft 90 King Air

The first officer reported that during cruise flight, both propeller secondary low pitch stop (SLPS) lights illuminated, indicating the SLPS system prevented both propellers from going below the low pitch hydraulic mechanical stop. The right occurred first, then the left approximately 1 minute later. Emergency procedures to correct the condition were ineffective. The right propeller feathered at some point during the flight, and the first officer reported that while operating single engine, they experienced a problem with the propeller governor. The flight proceeded direct to an airport with short runways approximately 3.2 nautical miles (nm) northwest of their present position, rather than to an air carrier airport located 8.5 nm away. The captain entered a close-in right base to runway 35 (2,688 feet long runway), while flying at 155 knots (51 knots above single engine reference speed). He turned onto final approach with the landing gear and flaps retracted, but overshot the runway. The airplane contacted a taxiway near the departure end of intended runway, and then collided with several obstacles before coming to rest at a house located past the departure end of runway 35. A post crash fire consumed the cockpit, cabin, and sections of both wings. Post accident examination of the airframe, engines, and propellers revealed no evidence of preimpact failure or malfunction. No determination was made as to the reason for the annunciation of both SLPS lights.

A 4,000-hour multi-engine private pilot lost control of the airplane while performing a go-around maneuver. The airplane subsequently pitched up, stalled and impacted a corn field in a nose low attitude where a post-impact fire ensued. Communications data and radar data compatible with the Radar Audio Playback Terminal Operations Recording (RAPTOR) program was used to plot the airplane's flight path on a topographical map. The plots appeared to indicate the airplane was on final, left of the extended runway 36 centerline. Detailed post-accident examinations of the airframe, engines and propellers were conducted and no anomalies were noted.

The airplane descended to ground impact while maneuvering during a go-around. The pilot was meeting friends at the airport. The friends and their pilot arrived first, and were waiting at the departure end of runway 03. The airplane approached on a straight-in to runway 03. They thought that everything looked good on the approach. Due to a hump in the runway, they lost sight of the airplane just before it would have touched down. They then saw the airplane climbing back up on a go-around. As the airplane came abeam of their position, they saw it enter a steep banked left turn at an angle of bank they estimated between 60 and 80 degrees. At this point the landing gear was still down and the altitude was 200 feet above the ground. The witnesses saw the airplane's nose suddenly drop and the airplane then descended rapidly to the ground. No evidence of a preimpact mechanical malfunction or failure was found during detailed examination of the airframe systems and engines.